Question # 1

Downs syndrome (Mongolism) occurs in man during which 21^st chromosome falls to segregate resulting gamete with

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20 chromosomes

21 chromosomes

22 chromosomes

24 chromosomes

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

An ezyme that can be used to treat a human Iysosome storage disease is

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B-galactosidase

a-galactosidase

Glucosidase

Invertase

Which animal shows digitigrade mode of locomotion.

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Bear

Dear

Rabbit

Horse

In Griffith experiment mice developed pneumonia when they were injected with:

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R-type bacteria

Heat killed S-type bacteria

Heat killed R-type bases

Heat killed S-type becteria along with live R-type becteria

Kidney health is described in terms of :

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The number of kidney stones

Rate of filteration

Water retension

Blood clot

The incidence of uric acid kidney stones is.

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10%

15%

20%

70%

Diploid parthenogenesis may occur in

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Aphids

Bees

Wasp

Honey bee

Hyponasty is caused by

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Auxin

Gibberellins

Abscisic acid

Cytokinins

The distinct levels of food chain are called.

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Food chain

Food Web

Trophic level

Energy pyramid

Example of day Neutral plant is.

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Tomato

Xanthium

Soyabean

Chrysanthium

Crossing over and random assortment of chromosomes are two significant happenings of

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Mitosis

Amitosis

Meiosis

All a,b,and c

German botanist Gottlieb Haberlandi said in 1902 that plant cells are

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Totipotent

Potent

Totipersausive

Totistrong

What does not happen during inspiration in man?

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Intercoatals musles contract

Ribs are elevated

Diphragm becomedome- shaped

Ribs move forwards

The number of lumbar vertabrae are

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5

7

12

33

Organisms that have had a foreign gene inserted into them are called.

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Transgenic organisms

Polygenesis

Hermaphrodites

Transmuted organisms

Nephridia are the excretory structures present in.

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Hydra

Planaria

Cockroach

Earth worm

Trisomy of chromosome 18 is found in.

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Down's syndrome

Edward syndrome

Patau syndrome

Jacob's syndrome

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