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 )

Observe the following graph of regulators In the above graph I, II and III represent

I II III Regulators Conformers Partial regulators

I II III Conformers Regulators Partial regulators

I II III Partial regulators Conformers Regulators

I II III Partial regulators Regulators Conformers

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In ecology, the basic unit of study is

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Important Questions on Organisms and Populations

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Biology>Ecology>Organisms and Populations>Organism and its Environment

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.

MEDIUM

Biology>Ecology>Organisms and Populations>Organism and its Environment

Which ONE of the following statements about ecosystem energetics is INCORRECT?

MEDIUM

Biology>Ecology>Organisms and Populations>Organism and its Environment

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>Organisms and Populations>Organism and its Environment

Individuals of one kind occupying a particular geographic area at a given time are called

MEDIUM

Biology>Ecology>Organisms and Populations>Organism and its Environment

Assertion

(A)

: In brackish water, stenohaline animals are abundant
Reason

(R)

: Brackish water animals can withstand wide fluctuations in salinity

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

Root does not help in the absorption of water in which of the following plant?

HARD

Biology>Ecology>Organisms and Populations>Organism and its Environment

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

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

Identify the incorrect statement

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

Observe the following graph of regulators

Question Image

In the above graph I, II and III represent

HARD

Biology>Ecology>Organisms and Populations>Organism and its Environment

Which of the following is incorrect pair regarding cyclomorphosis in Daphnia

?

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

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?

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Biology>Ecology>Organisms and Populations>Organism and its Environment

With reference to temperature adaptations, identify $A, B, C$ of the following graph

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Biology>Ecology>Organisms and Populations>Organism and its Environment

Species that are most effective at colonizing new habitats show:

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Biology>Ecology>Organisms and Populations>Organism and its Environment

Light is an ecological factor that shows its influence on many biological activities like pigmentation, metabolism, etc. Cave dwellers exhibit:

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Biology>Ecology>Organisms and Populations>Organism and its Environment

Stratification is more common in which of the following?

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Biology>Ecology>Organisms and Populations>Organism and its Environment

Homeothermy in humans is maintained through

MEDIUM

Biology>Ecology>Organisms and Populations>Organism and its Environment

Which of the following statements are wrong regarding biodiversity ?
(i) Tropics harbor more species than temperate or polar areas
(ii) Terrestrial biodirersity increases from the equator to the poles
(iii) Patterm of biodiversity should not depend on latitude and species area relationship
(iv) Biodiversity exists not only at the species level but also at the lerels of biological organization
(v) Temperate regions are relatively more constant than that of the tropical regions

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

In Amphibian and reptiles, the body temperature changes corresponding to external temperature. The organisms which show this kind of response is termed as -

EASY

Biology>Ecology>Organisms and Populations>Organism and its Environment

Animals living in air-water interface

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Biology>Ecology>Organisms and Populations>Organism and its Environment

Most animals are tree dwellers in a:

In ecology, the basic unit of study is

Important Questions on Organisms and Populations

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