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

( a ) − ( iv ) ; ( b ) − ( i ) ; ( c ) − ( iii ) ; ( d ) − ( ii )

( a ) − ( iv ) ; ( b ) − ( ii ) ; ( c ) − ( iii ) ; ( d ) − ( i )

( a ) − ( iv ) ; ( b ) − ( i ) ; ( c ) − ( ii ) ; ( d ) − ( iii )

( a ) − ( iv ) ; ( b ) − ( iii ) ; ( c ) − ( ii ) ; ( d ) − ( i )

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(Stenothermal/Eurythermal) organisms tolerate only a narrow range of temperatures.

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Important Questions on Organisms and Populations

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Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

If rice is cooked in a pressure cooker on the Siachen glacier, at sea beach, and on Deccan plain, which of the following is correct about the time taken for cooking rice?

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Study the following statements regarding adaptations in freshwater habitat
I. Amoeba has contractile vacuole.
II. Glomerular kidneys in freshwater fishes.
III. Sponges form gemmules.
IV. Neoceratodus forms a gelatinous cocoon.
Among the above, the correct statements are

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Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Write on the adaptation of xerophytes.

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Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Mention any two mechanisms how human body compensates low oxygen availability at higher altitude.

EASY

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Identify the incorrect statement

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

It is an example of an animal that develop accessory respiratory organs to utilise atmospheric air when fresh water dries up.

HARD

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Give two reasons as to why a weed like Calotropis flourishes in the abandoned fields?

EASY

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Choose the correct statement for 'Allen's Rule'.

HARD

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Small mammals and birds are rarely found in polar regions. The reason is that

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

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

EASY

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

A prey develops a defence against a predator. Justify the statement with two examples of animals.

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

A desert lizard (an ectotherm) and a mouse (an endotherm) are placed inside a chamber at 15^oC and their body temperature [T (L) for the lizard and T (M) for the mouse] and metabolic rates [M (L) for the lizard and M (M) for the mouse] is monitored. Which one of the following is correct?

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Given is a diagram representing the annual mean temperature and the annual mean precipitation in three biomes $P, Q$ and $R$ on the planet. All the animals living in these biomes together can be largely grouped into two major classes 'Regulators' and 'Conformers'. Regulators are the animals that can regulate their body temperature and Conformers are those animals whose body temperature changes as per the environmental temperature. Assuming that these animals do not have any specialized adaptations, the correct statement would be

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MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Give four adaptive features of halophytes.

HARD

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Assertion (A): A person goes to high altitude and experiences 'altitude sickness' with symptoms like breathing difficulty and heart palpitations.
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.

HARD

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Statement (S): Very small animals are rarely found in the polar regions.

Reason (R): Small animals have a larger surface area relative to their volume and tend to lose body heat.

The correct answer is

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Species that are most effective at colonizing new habitats show:

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Explain giving reasons why the tourists visiting Rohtang pass or Mansarovar are advised to resume normal active life after a few days of reaching there.

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Xeric environment is characterized by

MEDIUM

Biology>Ecology, Environment and Conservation>Organisms and Populations>Adaptations

Most living organisms cannot survive at temperature above 45

°

C. How are some microbes able to live in habitats with temperatures exceeding 100

°

(Stenothermal/Eurythermal) organisms tolerate only a narrow range of temperatures.

Important Questions on Organisms and Populations

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