Question # 1

The chromatids repel each other during.

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Leptotene

Zygotene

diplotene

Pachytene

The discoidal cap of cells above the blastocoel is called.

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Ectoderm

Endoderm

Mesoderm

Blastoderm

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

In 1953 Watson and Crick proposed structure of the

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RNA molecule

ATP molecule

DNA molecule

NAD molecule

Earthworm is the ideal example of tubular excretory system called

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Protonephridia

Mesonephridia

Metanephridia

Prenephridia

Hemoohilia is.

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Affects both sexes equally

Affects men more than woman

Affects women more than men

Is non allelic recessive sex linked

In the eighteenth century organisms were classified by

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Charles Darwin

Alfred Wallace

Carolus Linnaeus

J.B Lamarck

Which one is not a vestigial organ of human being.

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Appendix

coccyx

eye lid

Nictitating membranes

The numebr of cervical vertebrae are.

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7

12

33

32

A change in the community structure of an ecosystem over a period of time is:

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Ecological niche

Ecological mutation

Succession

Genetic Drift

Commonly enzyme thermus aquatious is also known as

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Taq polymerase

DNA polymerase

RNA polymerase

Taq ligase

Which one is parthenogenic fruit.

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Apple

Pine apple

Peach

Mango

A full set of genes of an individual is called.

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Genome

Genotype

Karyotype

Dominance

Which one of the following condition is resulted from excess GH in adults?

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Cushing's disease

Acromegaly

Hyperthyroidism

Diabetes mellitus

Oviduct opens into

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Uterus

Cervix

Vagina

Bladder

Maximum speed of nerve impulse transmission is

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100 m/s

110 m/s

120 m/s

130 m/s

The internal hydrostatic pressure in plants is.

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Root

Turgor

Osmotic

Solute

Fresh water ecosystem covers less than.

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1%

3%

5%

7%

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