Question # 1

In hershey & chase experiment, 32p labeled bacteriophages allowed to infect the becteria.During analysis 32 p activity wa detected:

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In culture medium

On the surface of becterial cell

Inside the becteiral cell

Both a and B

Nociceptors produce sensation of

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Touch

Pain

Warmth

Pressure

A pesticide is a chemical which destroys agricultural

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Pests

Competitors

Crops

Both a & b

In oceans especially in tropical regions temperature of surface water is about

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10^oC

15^oC

25^oC

35^oC

The vertebral column of human consists of vertebrae.

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31

32

33

34

In natural selection, the environment plays role affecting the proportions of gene in .

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Population

Community

Area

Blome

Each bivalent consists of four.

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Chromosomes

Chromatids

spores

Chiasmata

Young tissues retaining the potential to divide.

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Meristem

Xylem

Phloem

Cork

The ultimate source of change is.

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Evolution

Mutation

Genetic drift

Migration

Study of different communities with relation to environment is called.

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Synecology

Embryology

Autecology

Zoology

A central role for chromosomes in heredity was first suggested in 1900 by.

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Karl correns

W. Sutton

F. Griffiths

T.H.Morgan

Menstrual cycle is called.

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Menopause

emotinal stress

Menstruation

Malnourishment effect of cycle.

Which is the end of muscle which remain fixed when then muscle contracts.

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Insertion

Origin

Tendon

Belly

Fruit ripening is due to the production of.

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Auxins

Cytokinin

Gibberellin

Ethane

The basic difference betweenn spermatogenesis and oogenesis is that :

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During spermatogenesis two more polar bodies are produced

The mature ovum is haploid while the sperm is 1n

Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

In 1999,transgenic crops were planted world wide on more than

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20 millions areas

35 millions areas

70 millions areas

90 millions areas

Adenine and guanine are called

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Purines

Pyrmidines

Both a & b

None of these

A bone is ot a part of pelvic girdle.

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Tillum

Ischium

Humerus

Pubis

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