Regeneration is not seen in ______

(a)

Starfish

(b)

Lizard

(c)

Hydra

(d)

Sea Anemone

In honey bees, the unfertilized egg produces

(a)

Queen bee

(b)

Worker bee

(c)

Drones

(d)

Worker bee and male honey bee

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

(a)

Older dies but new ones are produced by reproduction

(b)

Nothing can produce without death

(c)

Death has nothing to do with the continuation of life

(d)

Parthenogenesis is must for sexual reproduction

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

(a)

A is correct R but is incorrect

(b)

Both A and R are correct

(c)

R is the correct explanation for A

(d)

A is not correct but R is correct

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

(a)

Bartholin's glands

(b)

Skene's glands

(c)

mammary glands

(d)

Cowper's gland

Expulsion of baby from the mother's womb is called _____

(a)

implementation

(b)

parturition

(c)

insemination

(d)

gestation

The ______ glands occur posterior to the vagina.

(a)

Skene's glands

(b)

Cowper's gland

(c)

prostate gland

(d)

Bartholin's glands

Several hormones like hCG, hPL oestrogen and progesterone are produced by

(a)

ovary

(b)

placenta

(c)

fallopian tube

(d)

pituitary

Assertion (A): Cervix is common site of ectopic pregnancies
Reason (R): Implantation of fertilized ovum outside uterus

(a)

A is wrong, R is right.

(b)

A is right, R is wrong

(c)

A and R are right. R does not explains A.

(d)

Both A and R are wrong.

The family planning programme was initiated by India in _____

(a)

1953

(b)

1972

(c)

1963

(d)

1951

This is not Major task of RCH.

(a)

Vaccinating the mother and child for infectious diseases

(b)

Introducing six education in Schools

(c)

Educating couples about the available with control

(d)

Creating awareness about care for pregnant Women

IUD's increase _____ of the sperm within the uterus.

(a)

Endocytosis

(b)

Pinocytosis

(c)

Phagocytosis

(d)

Exocytosis

Identify the correct statement.

(a)

Lactational amenorrhea is a permanent birth control method

(b)

Condoms are made of polyethylene glycol and lambskin

(c)

LNG -20 is a copper-releasing IUD

(d)

Diaphragm covers the cervix there by preventing sperm entry

The ZW - ZZ type of sex determination is seen ________.

(a)

Butterflies

(b)

Drosophila

(c)

Gypsy moth

(d)

Human being

A normal-visioned man whose father was blind marries a woman whose father was also colour blind. They have their first child as a daughter. What are the chances that this child would be colour blind?

(a)

100%

(b)

0%

(c)

25%

(d)

50%

The experiment conducted by Griffith was based on_________.

(a)

Transduction

(b)

Replication

(c)

Transformation

(d)

Conjucation

The Okazaki fragments in DNA chain growth 

(a)

Result in transcription

(b)

Polymerise in the 3' to 5' direction and forms replication fork

(c)

Prove semi-conservative nature of DNA replication

(d)

Polymerises in the 5' to 3' direction and explain 3'to 5' DNA replication

Which of the following antibiotic inhibits the interaction between tRNA and mRNA?

(a)

Neomycin

(b)

Streptomycin

(c)

Tetracycline

(d)

Chloramphenicol

_________________ era is called age of mammals

(a)

Precambrian

(b)

Permian

(c)

Cenozoic

(d)

Paleozoic

According to big bang theory, the primitive earth had all the following. Except:

(a)

Ammonia

(b)

Methane

(c)

Oxygen

(d)

Hydrogen and water vapour

Apple maggot flies are example of ___________

(a)

Hybrid breakdown

(b)

Physiological isolation

(c)

Allopatric speciation

(d)

Species Extinction

Calculate the allelic frequency of Aa, if 'A' allelic has frequency of 0.3 and 'a' allele has frequency of 0.7

(a)

0.67

(b)

0.42

(c)

0.36

(d)

0.59

Vector control research Centre is located in__________

(a)

Chennai

(b)

Delhi

(c)

Puducherry

(d)

Hyderabad

For the following diseases, respiratory system is the site of infection,except_____

(a)

Dengue fever

(b)

Chicken pox

(c)

Common cold

(d)

Measles

Identify the mismatched pair

(a)

Hepatitis - Liver

(b)

Poliomyelitis - Brain and spinal cord

(c)

Measles - Intestine

(d)

Mumps - Salivary gland

Identify the incorrect statement

(a)

Antibody Mediated Immunity was elicited by T cells.

(b)

It is a character of vertebrates only

(c)

Immunoglobulins act against pathogens and kill them.

(d)

It is also called humoral immunity

The first bio herbicide was got from_______

(a)

Trichoderma

(b)

Phytophthora species

(c)

Bacillus

(d)

Aspergillus

What gases are produced in anaerobic sludge digesters?

(a)

Methane and CO₂ only

(b)

Methane, hydrogen sulphide and CO₂

(c)

Methane, hydrogen sulphide and O₂

(d)

Hydrogen sulphide and CO₂

The flavour in the yogurt is due to __________________

(a)

Formal dehyde

(b)

Lactate

(c)

Acetaldehyde

(d)

Caesin

Choose the option not applicable to ELISA

(a)

It is a bio chemical produce to detect antigens in a sample

(b)

The intensity of colour obtained in the test is proportional to amount of antigen.

(c)

It can detect DNA

(d)

ELISA is a test for detecting human chorionic gonadotropin hormone

Most of the adult stem cells are______and can act as a repair system of the body

(a)

Totipotent

(b)

Multipotent

(c)

Oligopotent

(d)

Pluvipotent

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein

(a)

Binds with epithelial cells of midgut of the insect pest ultimately killing it.

(b)

Is coded by several genes including the gene cry.

(c)

Is activated by acid pH of the foregut of the insect pest.

(d)

Does not kill the carrier bacterium which is itself resistant to this toxin.

Van't Hoffs rule describes the impact of ____________ on the environment.

(a)

Light

(b)

Temperature

(c)

Water

(d)

Soil

The grizzled squirrel and lion tailed Macaque are endemic to _____________

(a)

Semi-Arid zone

(b)

Indian Desert

(c)

Western Ghats

(d)

Eastern Ghats

Statement 1: Biodiversity is the assemblage of different life form.
Statement 2: The term biodiversity was introduced by Edward Wilson.

(a)

Statement 1 is correct, statement 2 in incorrect

(b)

Statement 1 is incorrect, statement 2 in correct

(c)

Both the statements are correct

(d)

Both the statements are incorrect

The tolerable level of sound is _____________

(a)

140 db

(b)

120 db

(c)

100 db

(d)

2220 db

Measuring Biochemical Oxygen Demand (BOD) is a method used for

(a)

Estimating the amount of organic matter in sewage water.

(b)

Working out the efficiency of oil driven automobile engines.

(c)

Measuring, the activity of Saccharomyces cerevisiae in producing curd on a commercial scales

(d)

Working out the efficiency of RBCs about their capacity to carry oxygen

BOD stands for_______

(a)

Biological Oxidation Demand

(b)

Biotic Oxygen Deficient

(c)

Biological Oxygen Deficit

(d)

Biochemical Oxidation Deficit

The type of endosperm noticed in Hydrilla seed is ___________

(a)

Ruminate endosperm

(b)

Nuclear endosperm

(c)

Cellular endosperm

(d)

Helobial endosperm

Assertion (A): Epidermis is protective in function.
Reason (R): Epidermis is outermost unilayer of another wall.

(a)

A is correct R is incorrect.

(b)

R explains A.

(c)

Both A and R are incorrect.

(d)

Both A and R are correct. R does not explain A.

How many characters studied by Mendel in pisum sativum

(a)

Three

(b)

Five

(c)

Seven

(d)

Nine

Number of chromosomes (2n) in Ophioglossum is _________

(a)

1226

(b)

1622

(c)

1262

(d)

2126

Identify the incorrect statement:

(a)

French chemist Louis Pasteur demonstrated the fermentation.

(b)

Fermentor is a vessel providing optimal condition for microbial action.

(c)

Solvent extraction is an upstream process of fermentation.

(d)

Distillation and filtration comes under down stream process.

Which of the following statements does not hold true for restriction enzyme?

(a)

It recognizes a palindromic nucleotide sequence

(b)

It is an endonuclease

(c)

It is isolated from viruses

(d)

It produces the same kind of sticky ends in different DNA molecules

A widely used fusogen in protoplast culture is ________

(a)

Polymethyl glycol

(b)

Polyethylene glycol

(c)

Polyethylene chloride

(d)

Polyvinyl chloride

The phenomenon of reversion of mature cells to meristematic state leading to callus formation is___________

(a)

Redifferentiation

(b)

Dedifferentiation

(c)

either (a) or (b)

(d)

none of these

Statement 1: Holoparsites depend totally on other organisms for nutrition.
Statement 2: Durnta is holoparasite.

(a)

Statement 1 is correct. Statement 2 is incorrect.

(b)

Statement 1 is incorrect. Statement 2 is correct

(c)

Both the statements are correct.

(d)

Both the statements are incorrect

Identify the incorrect option among the following component sequence.

(a)

air, water, sunlight and temperature

(b)

latitude, altitude, direction of mountain and aptitude

(c)

soil air, pH of soil, saltwater and soil moisture

(d)

carbohydrate, protein, lipids and humic substances

The upright pyramid is not a feature of _______

(a)

Pond ecosystem

(b)

Grassland ecosystem

(c)

Forest ecosystem

(d)

Terminal ecosystem

Lotic ecosystem refers to________

(a)

Open water ecosystem

(b)

Running water ecosystem

(c)

Standing water ecosystem

(d)

Ocean water ecosystem

Total number of forestry extension centres in Tamil Nadu is ______________

(a)

16

(b)

32

(c)

18

(d)

51

When does World Ozone Day is observed?

(a)

June 17^th

(b)

December 1^st

(c)

October 12^th

(d)

September 16^th

Identify the incorrect statement:

(a)

Bio-inoculants are efficient in solubilising phosphate

(b)

Bio-inoculants are ecofriendly organic agro outputs

(c)

Bio-inoculants are obtained from dead organic matters

(d)

Bio-inoculants are designed to improve soil fertility

Intraspecific hybridization is also termed as __________ 

(a)

Intravarietal hybridization

(b)

Intervarietal hybridization

(c)

Interspecific hybridization

(d)

Intergeneric hybridization

Atlas 66 is an improved variety of ____________

(a)

Rice

(b)

Maize

(c)

Wheat

(d)

Spinach

Statement 1: Chinese discovered the paper.
Statement 2: Eucalyptus and Casuarina are the widely used tree species for making paper pulp.

(a)

Statement 1 is correct and Statement 2 is also correct

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Statement 1 is incorrect and Statement 2 is correct

(d)

Both the Statements are incorrect

The first disease for which vaccine was prepared is _______

(a)

Polio

(b)

Chicken pox

(c)

Cholera

(d)

Small pox