Question # 1

The biome, which has very fertile soil, rich in organic matter with maximum water holding capacity is.

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Alpine forest

Grassiland

Desert

Temperate deciduous forest

Cardiac muscles are muscles of the

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Liver

Stomach

Kidney

Heart

In Meselson ansd stahl experiment, the DNA from sample at 20 minutes, after centrifugatioon it made sediments at the :

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Top

Bottom

Intermediate

Top & intermediate

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

Reproduction is very important to the survival of.

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Species

Individual

Population

Community

Blood supplied to kidneys from each cardiac beat is.

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10%

20%

30%

50%

The vertebral column of human consists of vertebrae.

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31

32

33

34

Active membrane potential is

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0.05 volts

- 50 mv

Both a & b

0.07 volts

With in the ovary , progestetrone is produced by the:

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Corpus albicans

Corpus Luteum

Tertairy follicles

Primary follicles

Lithosphere includes.

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Air

Water

Gases

Earth soil

Inheritance of skin colour in man is controlled by eight pairs of genes , which are:

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Linked

Codominent

Multiple alleles

Assorting independently

Each bivalent has

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Twochromatids

Four chromatids

Both a & b

None of these

The number of human spinal nerves is:

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24

50

62

64

Detection of changes and signaling for effector's response to control system is called.

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-ive feedback mechanism

transformation

feed back mechanism

Nephridial system

Pathway of passage of impulse during reflex action is called.

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Reflex

Reflex arc

Stimulus

Membrane potential

For evaporative cooling bats use

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Saliva

Urine

Sweat

All a,b,andc

The idea of endosymbiont was purposed by.

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Cuvler

Lyell

Malthus

Marglls

In humans ,MSH(melanocyte-stimulating hormone) ___________

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Regulates primary skin color

Causes the thyroid to produce thyroxin

Governs the rate of tarming

Concentration is very low.

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