Question # 1

Oxytocin is secreted by the endocrine gland named:

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Pituitary gland

Thyroid gland

Parathyroid gland

Adrenal gland

Which one of the following pairs represents analogous features?

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Elephant tusks & Human incisors

Insects wings & bat wings

Mammal fore limb & bird wing

Reptilian heart & mammalism heart

All the food chains begin with.

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Producers

Primary consumers

Secondary consumers

Decomposers

They have adaptations for reduced rate of transpiration.

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Halophytes

Hydrophytes

Mesophytes

Xerophytes

The process that normally exerts the greatest control over the water balance of an individual is:

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Sweating

Kidney function

Evaporation through the skin

Respiratory loss

Histones are positively charged due to an abundance of the basic amino acids

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Arginine

Lysine

Both a & c

Alanine

Gray vegetal cytoplasm gives rise to.

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Gut

Muscle cells

Notochord

Larval epidermis

Some individuals leave behind more progeny than others and teh rate at which they do so is affected by their inherited characteristics. This is called.

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Non random mating

Selection

Migration

Mutation

Adult transgenic tobacco plants glowed when sprayed with the substrate

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Luciferon

Luciferin

Luciferol

Luciferase

On over the wound the cambium forms

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Callus

Wood tissues

Both a & b

Gall

The number of lumbar vertabrae are

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5

7

12

33

The pigment free area that appears at the time of fertilization is called.

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embryo

Gray crescent

Yolk

White cytoplasm

When haemoglobin of the blood is fully saturated with oxygen, the 100cc of blood comains

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15cc of oxygen

20cc of oxygen

25cc of oxygen

10cc of oxygen

Triethylamine Oxide is produced in.

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Hag Fish

Bony fish

Marine fish

Cartilaginous fish

The syndrome in which individual has short stature, webbed necm, without ovaries, and complete absence of germ cells is.

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Mongolism

Kline felter syndrome

Down's syndrome

Turner's syndrome

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

The uterine layer which is shed with each monthly cycle is:

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Endometrium

Perimetrium

Tunica albuginea

Myometrium

During elongation, the cell volume increase upto.

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50 fold

100 fold

150 fold

200 fold

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