Select the correct match with respect to the population interaction. COLUMN I COLUMN II (a) An orchid – mango association (i) Mutualism (b) Five related species of warblers (ii) Ectoparasites (c) Mycorrhizae (iii) Commensalism (d) Fishes and copepods (iv) Competitive co-existence

a – iii; b – iv; c – i; d – ii

a – ii; b – iii; c – i; d – iv

a – iv; b – ii; c – i; d – iii

a – iii; b – iv; c – ii; d – i

Mutualism may be best defined as:

A relationship which is favourable to both and obligatory

A relationship between two species

A relationship which is favourable to both but not obligatory

A relationship between two symbiotic groups

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

Low pigmentation, low metabolism

Low pigmentation. high metabolism

High pigmentation, low metabolism

High pigmentation, high metabolism

In the exponential growth equation N t = N 0 e rt , e , represents:

The base of exponential logarithms

The base of geometric logarithms

E M B I B E

Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 6

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Earn 100

In a pond, the number of lotus plants increases from 20 to 25 in one year. Then, the birth rate is ____ offspring per lotus per year.

50% studentsanswered this correctly

Important Questions on Organisms and Populations

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Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 7

Assertion (A): Intraspecific competition is more severe than interspecific competition.

Reason (R): In Intraspecific competition, members of the same species fight for the same resources.

HARD

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IMPORTANT

Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 8

If the population of a city of

100

people increases at an intrinsic rate of

0.1,

but the city only has access to food and housing for

200

people, what will the current growth rate of the population be?

HARD

NEET

IMPORTANT

Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 9

Select the correct match with respect to the population interaction.

COLUMN I	COLUMN II
(a) An orchid – mango association	(i) Mutualism
(b) Five related species of warblers	(ii) Ectoparasites
(c) Mycorrhizae	(iii) Commensalism
(d) Fishes and copepods	(iv) Competitive co-existence

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Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 13

Predators in nature are prudent because

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Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 17

The population density in a given habitat at time t+1 is represented by the relation:

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Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 18

Consider the following four conditions (i— iv) and select the correct pair about desert lizards.
(i) Burrowing in the soil to escape high temperature,
(ii) Losing heat rapidly from the body during high temperature.
(iii) Bask in the sun when the temperature is low.
(iv) Insulating body due to thick fatty dermis.

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Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 19

If high altitude birds become rare or extinct, the plants which may disappear along with them are :