______ is seen in Aurelia.

(a)

Binary fission

(b)

Regeneration

(c)

Sporulation

(d)

Strobilation

All of the following are methods of asexual reproduction except

(a)

Regeneration

(b)

Conjugation

(c)

Sporulation

(d)

Fragmentation

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.

(a)

i, ii and iii

(b)

i, iii and iv

(c)

i, ii and iv

(d)

ii, iii and iv

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

(a)

amnion

(b)

chorion

(c)

allantois

(d)

vitelline membrane

The unequal divisions during oogenesis results in small cells called ______

(a)

oogonia

(b)

primary oocyte

(c)

secondary oocyte

(d)

polar bodies

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

(a)

ovary

(b)

placenta

(c)

fallopian tube

(d)

pituitary

Find out the proper sequence representing the parts of female reproductive system.

(a)

Vagina ⟶ Ovary ⟶ Uterus ⟶ Cervix ⟶ Infundibulum ⟶ Oviduct

(b)

Vagina ⟶ Ovary ⟶ Oviduct ⟶ Infundibulum ⟶ Cervix ⟶ Uterus

(c)

Ovary ⟶ Infundibulum ⟶ Oviduct ⟶ Uterus ⟶ Cervix ⟶ Vagina

(d)

Oviduct ⟶ Ovary⟶ Uterus⟶ Infundibulum ⟶ Vagina⟶ Cervix

What is the role of fimbriae?

(a)

Secretion of oestrogen and prolactin.

(b)

Helps in the collection of the ovum after ovulation

(c)

Attaches the ovary to the abdominal cavity.

(d)

Cormects oviduct with ovary

The incubation period for _____ can be more than 10 years.

(a)

HPV

(b)

HBV

(c)

Treponema

(d)

HIV

An abnormal foetal heart beat rate or pattern indicates the foetus is not getting enough

(a)

Nutrients

(b)

Oxygen

(c)

Blood

(d)

Signals

Usage of _____ greatly reduces the risk of STI.

(a)

IUDS

(b)

Latex Condoms

(c)

Saheli

(d)

Lippes loop

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

(a)

Fischer

(b)

Landsteiner

(c)

Bernstein

(d)

Wiener

_________ is an inborn error of metabolism caused due to autosomal recessive gene.

(a)

Thalassemia

(b)

Albinism

(c)

Phenylketonuria

(d)

Huntington's chorea

In ______ the tissues of male and female genotype type form a mosaic

(a)

lIaplo-diploidy

(b)

Gynandromorphy

(c)

Genic balance

(d)

Lygaeus type

Which blood group doesn't possess antibodies?

(a)

I^AI^B

(b)

I^OI^O

(c)

I^AO

(d)

I^BI^B

The term nucleic acid was coined by ________.

(a)

Miescher

(b)

Hofmeister

(c)

Altman

(d)

Mcleod

The "non-sense' codons refer to.

(a)

UAA UUU UGA

(b)

UUU ACU UAC

(c)

UAG UGA UAA

(d)

UAG UAA UUU

Whose experiment finally provided convincing evidence that DNA is the genetic material?

(a)

Griffith experiment

(b)

Avery, Macleod and McCarty's experiment

(c)

Hershey-Chase experiment

(d)

Urey-Miller's experiment

The sequence of bases in coding strand of DNA is GAGTTAGCAGGC, then the sequence of codons in primary transcript is ___________

(a)

C U C A U A C G C C C G

(b)

C U C A A U C G U C C G

(c)

U C A G A U C U G C G C

(d)

U U C A A U C G U G C G

____________ is not a vestigial organ.

(a)

Nictitating membrane

(b)

Wisdom teeth

(c)

Ear muscles

(d)

Wing ofInsect

According to Neo Darwinism change in the frequency of genes in population arise due to all Except.

(a)

Natural selection

(b)

Mutation

(c)

Struggle for existence

(d)

Variation

Peripatus is the connection link between Annelida and _______________

(a)

Arthropoda

(b)

Platyhelminthes

(c)

Mollusca

(d)

Echinodermata

Assertion (A): Oparin used the term coacervases
Reason (R): Coacervates are colloidal particles in aqueous environment

(a)

Both A and R are incorrect

(b)

Both A and R are correct

(c)

Both A and R are correct. R explains A.

(d)

A is correct R is incorrect

________is a dermotropic disease

(a)

Influenza

(b)

Measles

(c)

Cold

(d)

Rabies

The incubation period of malaria is_______days.

(a)

10

(b)

12

(c)

15

(d)

18

__________is not linked to malaria

(a)

Haemozoin

(b)

TNF-a

(c)

Phencyclidine

(d)

Interleuin

Which of the following statement(s) is true regarding cancer cells?
(a) Neoplasm or tumor cells show uncontrolled growth
(b) They are metastatic
(c) They lack contact inhibition
(d) They may be benign or malignant

(a)

(a) only

(b)

(b) and (c)

(c)

(d) only

(d)

All the above

________is not used as a biofertilizer

(a)

Bacillus thuringiensis

(b)

Rhizobium

(c)

Nostoc

(d)

Anabaena

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

(a)

i and iii

(b)

ii and iii

(c)

i and iv

(d)

ii and iv

Rearrange the following steps as PCP in correct order.
1. Extension
2. Annealing
3. Denaturation

(a)

Annealing \(\rightarrow \) Extension \(\rightarrow \) Denaturation

(b)

Denaturation \(\rightarrow \) Annealing \(\rightarrow \) Extension

(c)

Annealing \(\rightarrow \)Denaturation \(\rightarrow \) Extension

(d)

Extension\(\rightarrow \) Annealing \(\rightarrow \) Denaturation

Which of the following is a behavioural adaptation?

(a)

Thick fur

(b)

camouflage

(c)

Sharp canines

(d)

Migration

Assertion (A): Movement of organism from one place to another and back is called migration.
Reason (R): Eel is an example for anadromous migration.

(a)

Both A and R are correct R explain A

(b)

A is correct R is incorrect

(c)

R does not explain A

(d)

Both A and R are incorrect

Project tiger was first launched in ____________

(a)

1973

(b)

1978

(c)

1999

(d)

2001

Mention the correct number of biodiversity hotspots identified throughout the world.

(a)

29

(b)

16

(c)

34

(d)

46

The tolerable level of sound is _____________

(a)

140 db

(b)

120 db

(c)

100 db

(d)

2220 db

A scrubber in the exhaust of a chemical industrial plant removes

(a)

Gases like sulphur dioxide.

(b)

Particulate matter of the size 5 micrometer or above.

(c)

Gases like ozone and methane

(d)

Particulate matter of the size 2.5 micrometer or less

UN conference on Sustainable development in 2012 was held at_______

(a)

Ruanda

(b)

Rio de Janeiro

(c)

Geneva

(d)

Stockholm

Name the person who discovered the pollen tube?

(a)

E. Strasburger

(b)

Hofmeister

(c)

Nehemiah Grew

(d)

G.B.Amici

Assertion (A): Anemophilous pollination occurs by animals.
Reason (R): Pollen grains are sticky for easy attachment on animals.

(a)

A is correct R is incorrect

(b)

R explains A.

(c)

Both A and R are incorrect.

(d)

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

Gregor Mendel ___________
(i) was born in Czechoslovakia
(ii) did his experiments in Pisum fulvum
(iii) was the first systemic researcher in genetics
(iv) Published his results in the paper "Experiments on Plant Hybrids"

(a)

All are correct

(b)

(ii), (iii), (iv) are correct

(c)

(i), (iii),(iv) are correct

(d)

(i), (iii), (iv) are correct

The 1 : 2 : 1 ratio of co-dominance process Mendel's ___________

(a)

Law of dominance

(b)

Law of recessiveness

(c)

Law of segregation

(d)

Law of independent assortment

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

(a)

Tetrad stage ~ Synapsis ~ Bivalent stage ~ cross over

(b)

Syndesis ~ Tetrad ~ Crossing over ~ Terminalisation

(c)

Terminalisation ~ Tetrad ~ Bivalent ~ Cross over

(d)

Cross over ~ Bivalent ~ Tetrad ~ Terminalisation

Identify the autotriploid plant

(a)

Potato

(b)

Coffee

(c)

Ground nut

(d)

Apple

Statement 1: YAC plasmid behaves like a yeast chromosome.
Statement 2: Circular YAC multiplies in bacteria.

(a)

Statement 1 is correct and Statement 2 is also correct.

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Both the statements are incorrect.

(d)

Statement 1 is incorrect and Statement 2 is correct.

Synseeds are developed by encapsulating embryoids with __________.

(a)

Sodium chloride

(b)

Potassium iodide

(c)

Sodium alginate

(d)

Potassium dichromate

Autoecology deals with the study of ___________.

(a)

Community

(b)

Population

(c)

Individual species

(d)

Niche of species

Photosynthetically Active Radiation ranges between the wavelength of __________

(a)

400 - 600 nm

(b)

600 - 700 nm

(c)

400 - 500 nm

(d)

400 - 700 nm

Identify the correct sequence of various zones from surface to depth in a pond ecosystem.

(a)

Profundal, limnetic, littoral and benthic

(b)

Benthic, littoral, profundal and limnetic

(c)

Limnetic, profundal, littoral and benthic

(d)

Littoral, limnetic, profundal and benthic

How many numbers of sacred grooves were documented in Tamil Nadu?

(a)

484

(b)

844

(c)

488

(d)

448

Who is popularly called as the "father of green revolution in India"?

(a)

Nel Jeyaraman

(b)

Dr. M.S. Swaminathan

(c)

Dr. Nammalvar

(d)

N.G.P. Rao

Statement 1: Aloe vera belongs to the family Asphodelaceae.
Statement 2: Jasminum grandiflorum belongs to the family of Oleaceae.

(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

______ is a second generation vaccine.

(a)

Polio

(b)

MMR

(c)

Hepatitis B

(d)

DPT