In oceans, environment is perpetually dark at

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11.Organisms and Populations

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In the oceans, the environment is perpetually dark at

A

More than $100\,m$

B

More than $500\, m$

C

Less than $100 \,m$

D

Less than $500 \,m$

Solution

Deep $(>500 \,m )$ in the oceans the environment is perpetually dark and its inhabitants are not aware of the existence of celestial source of light

Standard 12

Biology

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Match List $- I$ with List $- II.$

List $- I$ List $- II$

$(a)$ Allen's Rule $(i)$ Kangaroo rat

$(b)$ Physiological adaptation $(ii)$ Desert lizard

$(c)$ Behavioural adaptation $(iii)$ Marine fish at depth

$(d)$ Biochemical adaptation $(iv)$ Polar seal

Choose the correct answer from the options given below.

$(a) -(b)- (c)- (d)$

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$I.$ Biochemical adaptation are seen in organisms living in great depth of the ocean to face crushing pressure

$II.$ Allen's rule is explain mammals living in colder climates

$III.$ Altitude sickness is caused because of body not getting enough oxygen due to low atmospheric pressure at high altitude

$IV.$ Desert lizards lack behavioural means to manage to their body temperature

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A process which maintains constancy of internal body environment of organisms despite varying external environmental conditions is called as

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Which is not a part of atmosphere

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