Question # 1

Asexual reproduction requires only a single parental organism which gives rise to offspring by

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Mitotic cell division

Meiotic cell division

Both a and b

None of these

The individuals have additional sex chromosome in

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Klinefelter's syndrome

Turner's syndrome

Down's syndrome

Sach's syndrome

The causes of green house effect are:

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Over urbanization

Deforestation

Industrialization

All of them

Using the hardin-weinberg principle, which expression represents the frequency of the homo-zygous recessive genotype?

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p²

2p

q²

q

Tube feet are locomotor organs of.

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Jelly fish

Cottle fish

Star fish

Silver fish

A clear picture of the genetic basis of sex determination emerged after the discovery of

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Autosomes

X chromosomes

Sex chromosomes

Y chromosomes

A strand of DNA, which is not transcribed is called as.

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Template strand

Antisense strand

Lagging strand

coding strand

The random loss of alleles in a population is called:

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Mutation

Selection

Gene flow

Genetic drift

Which sequence of organs is correct in air passage way of man?

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Nasal cavities larynx phaynx trachia bronchi

Nasal cavities phaynx trachia larynxbronchi

Nasal cavities phaynx larynxbronchitrachia

Nasal cavities phaynx larynxtrachia bronchi

Blood supplied to kidneys from each cardiac beat is.

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10%

20%

30%

50%

Vehicle for transport of male gamete in land plants is

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Water

Pollen tube

Pollen grain

Wind

The number of sets of microtubules originate from each pair of centriole is.

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03

04

05

06

To genome fragment can be separated according to their lengths during .

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Gel electrophoresis

PCR

Cloning

Gene therapy

median lobe of pituitary gland secretes hormone.

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Gonadotrophic hormone

Melanophore stimulating hormone

antidiuretic hormone

Somatotrophin

The ultimate source of change is.

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Evolution

Mutation

Genetic drift

Migration

The joint that allows the movement in two directions is called.

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Cartilaginous joints

Hinge joints

Syrovial joints

Ball and Socket joints

Identical twins result from the fertilization of:

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One ovum by the sperm

One ovum by the two sperms

Two ova by two sperms

Two ova by one sperm

Interatrial vertebrates, the gill pouches develop into.

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Gills

Lungs

Nose

Eustachian tube

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