Define regeneration mention the types.

During which stagesidoes multiple fission occur is plasmodium.

Differentiate between transverse binary fission and longitudinal binary fission

Repeated fission is a type of multiple fission. Yes or No? Why?

What is Organogenesis?

Which type of reproduction is effective -Asexual or sexual and why?

Draw a labeled sketch of a spermatozoan.

Correct the following statements
a) Transfer of an ovum collected from donor into the fallopian tube is called ZIFT.
b) Transfering of an embryo with more than 8 blastomeres into uterus is called GIFT.
c) Multiload 375 is a hormone releasing IUD.

What is criss-cross inheritance?

Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science

What is autogamy?

Name the four types of fission seen in animals

What is Placentation?

What is orchidectomy?

Explain the term C-section.

What is parthenogenesis? Give two examples from animals.

At what stage of development are the gametes formed in new born male and female?

Correct the following statements
a) Transfer of an ovum collected from donor into the fallopian tube is called ZIFT.
b) Transfering of an embryo with more than 8 blastomeres into uterus is called GIFT.
c) Multiload 375 is a hormone releasing IUD.

Why are sex linked recessive characters more common in the male human beings?

Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science

What is plasmotomy?

Name the types of natural parthenogenesis.

Name the four types of fission seen in animals

Define fertilisation.

What is spermiation?

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

Expand the acronyms
a. FSH
b. LH
c. hCG
d. hPL

Select the correct term from the bracket and complete the given branching tree

(Barriers, Lactational amenorrhoea, CuT, Tubectomy)

What is haplodiploidy?

Name the parts marked ‘A’ and ‘B’ in the given transcription unit:

______ is seen in Aurelia.

All of the following are methods of asexual reproduction except

Which of the following statements, support the view that elaborate sexual reproductive process develops much later in the organic evolution?
i. Lower groups of organisms have simpler body design
ii. Asexual reproduction is common- in lower groups
iii. Asexual reproduction is common in higher groups of organisms
iv. The high incidence of sexual reproduction is in angiosperms and vertebrates.

Among the extra embryonic membranes the _____ is the outer most membrane.

The unequal divisions during oogenesis results in small cells called ______

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Offsprings produced by asexual reproduction are genetically identical to the parent.
Reason: Asexual reproduction involves only mitosis and no meiosis

A – Ovulation is the release of ovum from the Graafian follicle.
R – It occurs during the follicular phase of the menstrual cycle.

The approach which does not give the defined action of contraceptive is

Which of the following is true about Rh factor in the offspring of a parental combination DdXDd (both Rh positive)?

Who is the founder of Modern Eugenics movement?

Plasmotomy is observed in ________

In honey bees, the mode of reproduction is

Given below, are a few statements related to external fertilization. Choose the correct statements:
i. The male and female gametes are formed and released simultaneously
ii. Only a few gametes are released into the medium
iii. Water is the medium in a majority of organism exhibiting external fertilization
iv. Offspring formed as a result of external fertilization have better chance of survival than those formed inside the organism

Spermatid \(\overset { A }{ \rightarrow }\) Spermatozoa what does 'A' stands for?

______ is a hormone produced by sertoli cells.

In which type of parthenogenesis are only males produced?

The mature sperms are stored in the

A – Ovulation is the release of ovum from the Graafian follicle.
R – It occurs during the follicular phase of the menstrual cycle.

Which one of the following groups includes sexually transmitted diseases caused by bacteria only?

Three children of a family have blood groups A, AB and B. What could be the genotypes of their parents?

Regeneration is not seen in ______

In honey bees, the unfertilized egg produces

"Nothing lives forever, but life continues". What does it mean?

Assertion (A): Organisms show three phases in their life cycle.
Reason (R): Juvenile phase is a degenerative phase.

The ______ glands in human female are homologous to the bulbouretural glands.

Animals giving birth to young ones:

The male sex hormone testosterone is secreted from

The process which the sperm undergoes before penetrating the ovum is

A – In human male, testes are extra abdominal and lie in scrotal sacs.
R – Scrotum acts as thermoregulator and keeps temperature lower by 2oC for normal sperm production
 

Identify the correct statements from the following

In which type of parthenogenesis are only males produced?

In which mode of reproduction variations are seen

Autogamy is seen in ______

Identify the correct option to label the diagram
1 - Bud forming
2 - Osculum
3 - Bud growing
4 - Daughter individual
5 - Individual parent

The mature sperms are stored in the

Name an organism where cell division is itself a mode of reproduction.

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

Identify the parts marked as A, B, C, D, E and F for the below diagram.

Define Vivipary.

Mention the differences between spermiogenesis and spermatogenesis

The unicellular organisms which reproduce by binary fission are considered immortal. Justify

Why are the offsprings of oviparous animal at a greater risk as compared to offsprings of viviparous organisms?

What is Incomplete parthenogenesis? Explain with example.

Meiosis is a type of cell division where the chromosomal number is reduced to half the number daughter cells. Which type of cellular division occurs in the drones to produces spermatozoa? Why?

What is the composition of semen?

Differentiate between the following:
(a) Binary fission in amoeba and multiple fission in Plasmodium
(b) Budding in yeast and budding in Hydra
(c) Regeneration in lizard and Planaria

How is juvenile phase different from reproductive phase?

Write notes on binary fission in animals.

Describe the regeneration process noticed in living organism.

Explain the role of oxytocin and relaxin in parturition and lactation.

In which type of parthenogenesis are only males produced?

Animals giving birth to young ones:

The mode of reproduction in bacteria is by

In which mode of reproduction variations are seen

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: In bee society, all the members are diploid except drones.
Reason: Drones are produced by parthenogenesis

Name an organism where cell division is itself a mode of reproduction.

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

What is parthenogenesis? Give two examples from animals.

Which type of reproduction is effective -Asexual or sexual and why?

Name the types of fission.

The unicellular organisms which reproduce by binary fission are considered immortal. Justify

Why is the offspring formed by asexual reproduction referred as a clone?

Why are the offsprings of oviparous animal at a greater risk as compared to offsprings of viviparous organisms?

Give reasons for the following:
(a) Some organisms like honey bees are called parthenogenetic animals
(b) A male honey bee has 16 chromosomes where as its female has 32 chromosomes

What is asexual reproduction?

Differentiate between the following:
(a) Binary fission in amoeba and multiple fission in Plasmodium
(b) Budding in yeast and budding in Hydra
(c) Regeneration in lizard and Planaria

How is juvenile phase different from reproductive phase?

What is the difference between syngamy and fertilization?

Write a note on regeneration.

Explain parthenogenesis.

In which type of parthenogenesis are only males produced?

Animals giving birth to young ones:

The mode of reproduction in bacteria is by

In which mode of reproduction variations are seen

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: In bee society, all the members are diploid except drones.
Reason: Drones are produced by parthenogenesis

In which type of parthenogenesis are only males produced?

Animals giving birth to young ones:

The mode of reproduction in bacteria is by

In which mode of reproduction variations are seen

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Viviparous animals give better protection to their off springs.
Reason: They lay their eggs in the safe places of the environment

Name an organism where cell division is itself a mode of reproduction.

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

What is parthenogenesis? Give two examples from animals.

Which type of reproduction is effective -Asexual or sexual and why?

Name the types of fission.

The unicellular organisms which reproduce by binary fission are considered immortal. Justify

Why are the offsprings of oviparous animal at a greater risk as compared to offsprings of viviparous organisms?

Give reasons for the following:
(a) Some organisms like honey bees are called parthenogenetic animals
(b) A male honey bee has 16 chromosomes where as its female has 32 chromosomes

Draw a gemmule and label any 2 parts.

Meiosis is a type of cell division where the chromosomal number is reduced to half the number daughter cells. Which type of cellular division occurs in the drones to produces spermatozoa? Why?

Differentiate between the following:
(a) Binary fission in amoeba and multiple fission in Plasmodium
(b) Budding in yeast and budding in Hydra
(c) Regeneration in lizard and Planaria

How is juvenile phase different from reproductive phase?

In which type of parthenogenesis are only males produced?

Animals giving birth to young ones:

In which mode of reproduction variations are seen

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Offsprings produced by asexual reproduction are genetically identical to the parent.
Reason: Asexual reproduction involves only mitosis and no meiosis

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Viviparous animals give better protection to their off springs.
Reason: They lay their eggs in the safe places of the environment

Given below are some human organs. Identify one primary and one secondary lymphoid organ. Explain its role.

How does saliva act inbody defence?

How does immune system work?

Name and explain the type of barriers which involve macrophages.

What are interferons? Mention their role.

Give the binomials of paddy and wheat.

What is maida? Mention its culinary purpose.

Name any four millet varieties.

Ragi rich food helps to overcome bone related ailments - justify.

Eating millets is good for diabetic patients. How?

What is meant by domestication of plants?

Mention any two free-living nitrogen-fixing bacteria.

What are bio-pesticides? Why they are considered better than synthetic pesticides?

Name any four plants used in Green leaf manuring

Define acclimatization.

What is ozone hole?

Give four examples of plants cultivated in commercial agroforestry.

Expand CCS.

What are greenhouse gases? Give an example.

Name any four greenhouse gases.

Productivity of profundal zone will be low. Why?

Discuss the gross primary productivity is more efficient than net primary productivity.

Pyramid of energy is always upright. Give reasons

What will happen if all producers are removed from ecosystem?

According to A.G. Tansley, what is an ecosystem?

Define ecology.

What is ecological hierarchy? Name the levels of ecological hierarchy.

What are ecological equivalents? Give one example

Distinguish habitat and niche

Why are some organisms called as eurythermals and some others as stenohaline ?

What is the name of the process given below? Write its 4 types.

How will you avoid the growing of microbes in nutrient medium during culture process? What are the techniques used to remove the microbes?

Write the various steps involved in cell suspension culture.

What do you mean Embryoids? Write its application.

Define tissue culture.

How do you use the biotechnology in modern practice?

What are the materials used to grow microorganism like Spirulina?

You are working in a biotechnology lab with a becterium namely E.coli. How will you cut the nucleotide sequence? explain it.

What are the enzymes you can used to cut terminal end and internal phospho di ester bond of nucleotide sequence?

Name the chemicals used in gene transfer.

When two different genes came from same parent they tend to remain together.
i) What is the name of this phenomenon?
ii) Draw the cross with suitable example.
iii) Write the observed phenotypic ratio.

If you cross dominant genotype PV/PV male Drosophila with double recessive female and obtain F1 hybrid. Now you cross F1 male with double recessive female.
i) What type of linkage is seen?
ii) Draw the cross with correct genotype.
iii) What is the possible genotype in F2 generation?

i) What is the name of this test cross?
ii) How will you construct gene mapping from the above given data?
iii) Find out the correct order of genes.

What is the difference between missense and nonsense mutation?

Define linkage. Mention its types.

Name the seven contrasting traits of Mendel.

What is meant by true breeding or pure breeding lines / strain?

Give the names of the scientists who rediscovered Mendelism

What is back cross?

Define Genetics.

What is reproduction?

Mention the contribution of Hofmeister towards Embryology.

List out two sub-aerial stem modifications with example.

What is layering?

What are clones?

Expand
(i) CFC
(ii) AQI
(iii) PAN

What is SMOG and how it is harmful for us?

List all the wastes that you generate, at home, school or during your trips to other places. Could you very easily reduce the generation of these wastes? Which would be difficult or rather impossible to reduce?

Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

What would Earth be like without the greenhouse effect?

Define endemism

How many hotspots are there in India? Name them

What are the three levels of biodiversity?

Name the active chemical found in the medicinal plant Rauwolfia vomitoria. What type of diversity it belongs to?

“Amazon forest is considered to be the lungs of the planet”- Justify this statement.

What is a Habitat?

Define ecological niche.

What is Acclimatisation?

What is Pedogenesis?

What is Zero Stress?

Mention the number of primers required in each cycle of PCR. Write the role of primers and DNA polymerase in PCR. Name the source organism of the DNA polymerase used in PCR.

How is the amplification of a gene sample of interest carried out using PCR?

What is genetically engineered Insulin?

Explain how “Rosie” is different from a normal cow

How was Insulin obtained before the advent of rDNA technology? What were the problems encountered?

How is milk converted into curd? Explain the process of curd formation

Give any two bioactive molecules produced by microbes and state their uses.

What is biological oxygen demand?

What is biocontrol?

What are biopesticides?

Given below are some human organs. Identify one primary and one secondary lymphoid organ. Explain its role. Liver, thymus, stomach, thyroid, tonsils.

Name and explain the type of barriers which involve macrophages.

What are interferons? Mention their role.

List out chemical alarm signals produced during inflammation.

Explain the process of replication of retrovirus after it gains entry into the human body.

List out the major gases seems to be found in the primitive earth.

Explain the three major categories in which fossilization occur?

Differentiate between divergent evolution and convergent evolution with one example for each.

How does Hardy-Weinberg’s expression (p²+2pq+q²=1) explain that genetic equilibrium is maintained in a population? List any four factors that can disturb the genetic equilibrium.

Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.

Give reasons: Genetic code is ‘universal’.

Name the parts marked ‘A’ and ‘B’ in the given transcription unit:

Differentiate - Leading stand and lagging strand

Differentiate - Template strand and coding strand.

Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science

What is haplodiploidy?

Distinguish between heterogametic and homogametic sex determination systems

What is Lyonisation?

What is criss-cross inheritance?

Why are sex linked recessive characters more common in the male human beings?

What is amniocentesis? Why a statutory ban is imposed on this technique?

Select the correct term from the bracket and complete the given branching tree

(Barriers, Lactational amenorrhoea, CuT, Tubectomy)

Correct the following statements
a) Transfer of an ovum collected from donor into the fallopian tube is called ZIFT.
b) Transfering of an embryo with more than 8 blastomeres into uterus is called GIFT.
c) Multiload 375 is a hormone releasing IUD.

Which method do you suggest the couple to have a baby, if the male partner fails to inseminate the female or due to very low sperm count in the ejaculate?

Which type of women are benefited by Invitro fertilization?

Mention the differences between spermiogenesis and spermatogenesis

At what stage of development are the gametes formed in new born male and female?

Expand the acronyms
a. FSH
b. LH
c. hCG
d. hPL

How is polyspermy avoided in humans?

What is colostrum? Write its significance.

Name an organism where cell division is itself a mode of reproduction.

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

What is parthenogenesis? Give two examples from animals.

Which type of reproduction is effective -Asexual or sexual and why?

Name the types of fission.

The following is the illustration of the sequence of ovarian events (a-i) in a human female.

a) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
b) Name the ovarian hormone and the pituitary hormone that have caused the above-mentioned events.
c) Explain the changes that occurs in the uterus simultaneously in anticipation.
d) Write the difference between C and H.

Explain the process of oogenesis.

Amnicentesis, the foetal sex determination test, is banned in our country, Is it necessary? comment

Explain the inheritance of sex linked characters in human being.

How is the two stage process of protein synthesis advantageous?

Why is the offspring formed by asexual reproduction referred as a clone?

What is strobilation?

How exogenous buds are developed by Hydra?

Complete the flow chart by mentioning the ploidy of cells in boxes.

What is Ferguson reflex?

Name the phenomenon where the female gamete directly develops into a new organism with with an avian example

Define regeneration mention the types.

Identify the parts marked as A, B, C, D, E and F for the below diagram.

What is amniocentesis? Why a statutory ban is imposed on this technique?

What are holandric genes?

Fusion of morphologically and physiologically similar gametes is called ______

Select the incorrect action of hormonal contraceptive pills from the following

Watson and Crick proposed their double helical DNA model based on the X-ray diffraction analysis of _________

Darwin’s finches are an excellent example of

Select the correct statement from the following

Paratope is an

All are peripheral lymphoid organs except

B Cells are activated by

______ is not a feature of acquired immunity.

Lymph nodes are seen in the ______

Tectona grandis is coming under family

Observe the following statements and pick out the right option from the following:
Statement I – Perfumes are manufactured from essential oils.
Statement II – Essential oils are formed at different parts of the plants.

Observe the following statements and pick out the right option from the following:
Statement I: The drug sources of Siddha include plants, animal parts, ores and minerals.
Statement II: Minerals are used for preparing drugs with long shelf-life.

Match the common names of the given plant species with their respective binomial

Identify the tamil name for flaked rice

The quickest method of plant breeding is

Jaya and Ratna are the semi dwarf varieties of

Match list I with list II

Which of the following scientist developed world's first cotton hybrid?

Assertion (A): SLF promotes vigorous growth and provide resistance against diseases.
Reason (R): SLF is made from kelp containing more than 70 minerals.

Find the wrongly matched pair.

Deforestation does not lead to

Identify the incorrect statement with regard to Global warming

Invasive species _______________

The ozone layer of ___________ is called bad ozone.

Which of the following is / are not a natural ecosystem?

Solar energy used by green plants for photosynthesis is only

The following diagram represents

 

Which of the following are not regulating services of ecosystem services
i) Genetic resources
ii) Recreation and aesthetic values
iii) Invasion resistance
iv) Climatic regulation

Pick out the edaphic factor among the following.

Ecology is the study of an individual species is called
i) Community ecology
ii) Autecology
iii) Species ecology
iv) Synecology

In soil water available for plants is

Pedogenesis refers to

Identify the indicators of fire.

Earth day is observed on

Micro propagation involves

Solidifying agent used in plant tissue culture is

Protoplast are the cells devoid of ___________

Assertion (A) : Sterilization helps to overcome microbes.
Reason (R) : Explants are autoclaved.

The term used to define the ability of a cell to generate entire individual is

Plasmids are

An analysis of chromosomal DNA using the southern hybridisation technique does not use

Zymology deals with __________

Cohesive ends are _____________

Statement 1: DNA is a hydrophobic molecule.
Statement 2: T-DNA is a part ofE-coli plasmid.

Which of the following sentences are correct?
1. The offspring exhibit only parental combinations due to incomplete linkage
2. The linked genes exhibit some crossing over in complete linkage
3. The separation of two linked genes are possible in incomplete linkage
4. Crossing over is absent in complete linkage

How many map units separate two alleles A and B if the recombination frequency is 0.09?

Which is not a feature of the chromosomal theory of inheritance?

Mechanism of crossing over involves the following stages. Select the correct sequence.

Transition type of gene mutation is caused when__________

In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?

Gene which suppresses other genes activity but does not lie on the same locus is called as

Which is not a correct statement?
(A) Variations are the raw materials for evolution
(B) Variations provide genetic material for natural selection
(C) It helps the individual to adapt to the changing environment
(D) Variations allow breeders to improve the crop field

How many characters studied by Mendel in pisum sativum

Identify the incorrect statement

Size of pollen grain in Myosotis

Arrange the layers of anther wall from locus to periphery

Assertion : Sporopollenin preserves pollen in fossil deposits
Reason : Sporopollenin is resistant to physical and biological decomposition

Which of the following aquatic plant is popularly known as the "Terror of Bengal"?

Which is not a part of mature seed?

As per 2017 statistics, the highest per capita emitter of Carbon dioxide in the world is

PCB is a major component of ______________

A lake which is rich in organic waste may result in

Identify the incorrect statement.
(i) EcoSan toilets is a sustainable way for handling human excreta by using dry composting toilets
(ii) It reduces waste water generation
(Ui) It is based on recovery and recycling of nutrients from excreta
(iv) EcoSan toilets are used in several parts of India and Srilanka.

Assertion (A): Evolution.of Greenhouse gases leads to Global warming
Reason (R): The energy released by the greenhouse gases move away from the atmospheric

Who introduced the term biodiversity?

The grizzled squirrel and lion tailed Macaque are endemic to _____________

________ is not a hotspot in India.

Mundanthurai wild life sanctuary is located in ___________ district.

Sacred groves are specially useful in

Which of the following is an r-species

"Birds and mammals attain greater body size in colder regions than warmer regions." - Choose the correct option.

A biologist studies the population of eats in a barn. He found that the average natality was 250, average mortality is 240, immigration is 20 and emigration to be 30. The  in population is

Pick out the correct statement regarding K-selected species

Death rate is also known as ___________

The genetic defect adenosine deaminase deficiency may be cured permanently by

The first synthetic vaccine produced was_________

This is not the advantage of new generation vaccine

PCR was developed by___________

Statement 1: Rosie was the first transgenic goat.
Statement 2: Meat is enriched with human protein

The gases produced in anaerobic sludge digesters are

________is not used as a biofertilizer

Which of the following are likely to be present in deep-sea water?

Tetracycline is a ________________
(i) bactericidal antibiotic
(ii) bacteriastatic antibiotic
(iii) narrow spectrum antibiotic
(iv) Broad spectrum antibiotic

Select the correct option denoting the proper sequence of sewage tratment.

Choose the correctly match pair.

The site of infection for yersinia pestis is___________

___________is not a symptom of Kala-azar

________is a plant with hallucinogenic properties

Choose the symptom not seen in amoebiasis

The age of fossils can be determined by

Origin of fishes occurred in ___________ period

Founder's effect is related to

Which one of the following brings about evidence for convergent evolution?

Genetic drift leads to

What is the basis for the difference in the synthesis of the leading and lagging strand of DNA molecules?

The first codon to be deciphered was __________ which codes for ________.

The classical concept of a gene was given by _______.

The term ___________ refers to DNA of Prokaryotes.

In genetic code there are __________ possible triplets.

Three children of a family have blood groups A, AB and B. What could be the genotypes of their parents?

Father of a child is colourblind and mother is carrier for colourblindness, the probability of the child being colourblind is

Improvement of human race by encouraging the healthy persons to marry early and produce large number of children is called

Which of the following is incorrect regarding ZW-ZZ type of sex determination?

The secretors have the I allele in _______.

The approach which does not give the defined action of contraceptive is

Select the incorrect action of hormonal contraceptive pills from the following

Sperm remains active for _____ hours in the female reproductive tract

____ vaccination of girls between 9-13 years can prevent cervical cancer.

______ is needed for normal functioning of reproductive structures

The foetal membrane that forms the basis of the umbilical cord is

The Androgen Binding Protein (ABP) is produced by

Spermatid \(\overset { A }{ \rightarrow }\) Spermatozoa what does 'A' stands for?

______ is popularly known as sperm lysin.

The dividing embryo takes ______ days to move to the uterus from the fallopian tube.

The mode of reproduction in bacteria is by

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Viviparous animals give better protection to their off springs.
Reason: They lay their eggs in the safe places of the environment

During favourable conditions ______ shows multiple fission.

If the entire organism behaves as a gamete the Phenomenon is called _____

Human beings exhibit ______

What is the basis for the difference in the synthesis of the leading and lagging strand of DNA molecules?

Which of the following is the correct sequence of event with reference to the central dogma?

Meselson and Stahl’s experiment proved

One gene one enzyme hypothesis was proposed by Beadle and Tatum based on ________

The experiment conducted by Griffith was based on_________.

ABO blood group in man is controlled by

Which of the following is true about Rh factor in the offspring of a parental combination DdXDd (both Rh positive)?

XO type of sex determination and XY type of sex determination are examples of

_________ proposed the existence of 8 alleles at a single Rh locus.

The lygaeus type (XX - XY) type of sex determination is seen in ______

The approach which does not give the defined action of contraceptive is

Select the incorrect action of hormonal contraceptive pills from the following

In ZIFT technique the zygote is transferred at the stage of ________

In the year ______    india is expected to become the largest country in population size ______

Formation of chronic ulcer is a symptom of ______

The most important hormone in intiating and maintaining lactation after birth is

Mammalian egg is

The Androgen Binding Protein (ABP) is produced by

_____ are endocrine cells.

____ is not linked to male reproductive system.

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Offsprings produced by asexual reproduction are genetically identical to the parent.
Reason: Asexual reproduction involves only mitosis and no meiosis

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Viviparous animals give better protection to their off springs.
Reason: They lay their eggs in the safe places of the environment

Plasmotomy is observed in ________

Giant Amoeba refers to ______

Budding is seen in ______

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: In bee society, all the members are diploid except drones.
Reason: Drones are produced by parthenogenesis

Assertion (A): The acrosome of the Sperm cell contains Sperm lysin.
Reason (R): Sperm lysin destroys the deformed Sperm cells.

The approach which does not give the defined action of contraceptive is

DOPA stands for __________

A mRNA molecule is produced by

Paratope is an

Allergy involves

Spread of cancerous cells to distant sites is termed as

Which is not a macrophage?

B Cells are activated by

Groundnut is native of _____________

Tectona grandis is coming under family

New world species of cotton

The active principle trans-tetra hydro canabial is present in

The only cereal that has originated and domesticated from the New world.

The quickest method of plant breeding is

Plants having similar genotypes produced by plant breeding are called

Importing better varieties and plants from outside and acclimatising them to local environment is called

Crosses between the plants of the same variety are called

Jaya and Ratna are the semi dwarf varieties of

Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancer?

One green house gas contributes 14% of total global warming and another contributes 6%. These are respectively identified as

The unit for measuring ozone thickness

The plants which are grown in silivpasture system are

Which is not a greenhouse gas?

Which of the following is not a abiotic component of the ecosystem?

Pond is a type of

Solar energy used by green plants for photosynthesis is only

Ecosystem consists of

Which of the following is / are not the mechanism of decomposition

Arrange the correct sequence of ecological hierarchy starting from lower to higher level.

Which of the given plant produces cardiac glycosides?

In soil water available for plants is

The plant of this group are adapted to live partly in water and partly above substratum and free from water

A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla

Micro propagation involves

The time duration for sterilization process by using autoclave is ______ minutes and the temperature is _______

Virus free plants are developed from

The prevention of large scale loss of biological interity

Identify the group of scientists who developed the intergenic hybrid - the pomato.

Restriction enzymes are

Plasmids are

Which of the following one is used as a Biosensors?

An analysis of chromosomal DNA using the southern hybridisation technique does not use

Some of the characteristics of Bt cotton are

An allohexaploidy contains

Genes G S L H are located on same chromosome. The recombination percentage is between L and G is 15%, S and L is 50%, H and S are 20%. The correct order of genes is

Changing the codon AGC to AGA represents

How many map units separate two alleles A and B if the recombination frequency is 0.09?

The following sequence represents the location of genes in a chromosome. A - B - C - M - R - S - y -Z. Which of the gene pairs will have least chance of getting inherited together?

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F₁ generation?

The genotype of a plant showing the dominant phenotype can be determined

Fruit colour in squash is an example of

The genes controlling the seven pea characters studied by Mendel are known to be located on how many different chromosomes?

An eminent Indian embryologist is

Identify the correctly matched pair

Identify the incorrect pair

Which of the following represent megagametophyte

In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell?

Which of the following would most likely help to slow down the greenhouse effect.

Deforestation means

People’s movement for the protection of environment in Sirsi of Karnataka is

The plants which are grown in silivpasture system are

Which is not a greenhouse gas?

Which of the following is not a abiotic component of the ecosystem?

Solar energy used by green plants for photosynthesis is only

Ecosystem consists of

Significance of food web is / are

Which of the following is / are not the mechanism of decomposition

A specific place in an ecosystem, where an organism lives and performs its functions is

Which of the given plant produces cardiac glycosides?

In soil water available for plants is

Ophrys an orchid resembling the female of an insect so as to able to get pollinated is due to phenomenon of

Pedogenesis refers to

Totipotency refers to

The time duration for sterilization process by using autoclave is ______ minutes and the temperature is _______

Virus free plants are developed from

The prevention of large scale loss of biological interity

Solidifying agent used in plant tissue culture is

Which of the following one is used as a Biosensors?

Which one of the following is not correct statement

Some of the characteristics of Bt cotton are

Cohesive ends are _____________

Self-ligation is prevented by____________

Due to incomplete linkage in maize, the ratio of parental and recombinants are

Genes G S L H are located on same chromosome. The recombination percentage is between L and G is 15%, S and L is 50%, H and S are 20%. The correct order of genes is

Changing the codon AGC to AGA represents

Which is not a feature of the chromosomal theory of inheritance?

Incomplete linkage was reported by Hutchinson in ___________

Extra nuclear inheritance is a consequence of presence of genes in

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F₁ generation?

The genotype of a plant showing the dominant phenotype can be determined

Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents

“Gametes are never hybrid”. This is a statement of