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 1

MEDIUM

NEET

IMPORTANT

Earn 100

Which of the following statements about interspecific competition are true?

(i) It is a competition between same species for same resources in an ecosystem.

(ii) It alters populations, communities and the evolution of interacting species.

(iii) The competition between leopards and lions for the same feed or prey is an example of interspecific competition.

(iv) It is a competition between same species for space.

50% studentsanswered this correctly

Important Questions on Organisms and Populations

MEDIUM

NEET

IMPORTANT

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

In the given figure, identify Coniferous forest, Arctic and Alpine Tundra and tropical forest, respectively.

MEDIUM

NEET

IMPORTANT

Biology Crash Course NEET>Chapter 35 - Organisms and Populations>Level 3>Q 5

Fishes of the Antarctic water prevent their body fluids from freezing by

MEDIUM

NEET

IMPORTANT

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

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.

EASY

NEET

IMPORTANT

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

NEET

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

EASY

NEET

IMPORTANT

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

Predators in nature are prudent because

EASY

NEET

IMPORTANT

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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