Question # 1

Buoyancy in the water is maintained by a specialized structure in bony fish called

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Fins

Swim bladder

Tail

Both a & c

In grassland ecosystem annual rainfall is about 250 to

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350 mm

450 mm

650 mm

750 mm

In succesion lithoseres takes place on:

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Sand

Water

Forest floor

Bare rocks

Each muscle fibre contains a large number of myofibrils having a diameter of

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1 - 2 mm

1 - 5 mm

2 - 4 mm

3 - 7 mm

In root nodules, the organisms present are.

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Bacteria

Algae

Fungi

Cyapobacteria

The number of chromosomes in frog is

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52

26

13

7

Temperature around 4^oC stimulates the production of.

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Florigen

Vernalin

Ethene

Auxins

The study of hman populations and things that affect them is called:

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Angiography

Demography

Mammography

Homography

Which one of the following is initiation codon.

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AUG

GUA

UGA

GAC

Glomerular filtrate are reabsorbed in.

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Promimal tubule

Loop of Henle

Distal tubule

Bowman's capsule

If an mRNA is synthesized with the differnt codons, what is the minimum number of amino acids in the protein that is formed by the mRNA?

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64 Amino acids

62 Amino acids

60 Amino acids

None of them

Endangered species of plants have been recorded to more than

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200

300

400

500

Soyabean is an example of plants.

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Short day

Long day

Dary neutral

Day independent

If lobster loses its pincer claw a new claw

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Regenerates

Never develops

IS ready

None of these

A chromosome with equal length of its arms.

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Acrocentric

Metacentric

sub meta centric

Telocentric

In myelinated neurons, the impulse jumps form node to node and is called.

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Saltatory impulse

synapse

Nerve impulse

synapsis

The first restriction enzyme was isolated by

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Kary mulis

Hamilton O. smith

Sagar

Maxam gilbret

Full cell cycle in yeast cells has length of.

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30 minutes

60 minutes

90 minutes

124 minutes

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