Ecology and Environment-Ecosystem (NEET Biology): Questions 20 - 25 of 112

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Question number: 20

» Ecology and Environment » Ecosystem » Energy Flow

MCQ▾

Question

Transfer of energy from one trophic level to another trophic level is according to the second law of thermodynamics. The efficiency of energy transfer from herbivorous to carnivorous is

Choices

Choice (4) Response

a.

5%

b.

50%

c.

25%

d.

10%

Question number: 21

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

Plants grow sparsely in arid regions of the world

Choices

Choice (4) Response

a.

Because of several factors combining together.

b.

Only because of high temperature.

c.

Because no seeds full on their soil.

d.

Because the soil is sandy.

Question number: 22

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

In an ecosystem, the population of

Choices

Choice (4) Response

a.

Primary consumers out number primary producers.

b.

Primary producers are more than that of primary consumers.

c.

Primary consumers are least dependent upon primary producers.

d.

Secondary consumers are largest because they are powerful.

Question number: 23

» Ecology and Environment » Ecosystem » Nutrient Cycling

MCQ▾

Question

Crystalline rocks are natural source of which biogenic element?

Choices

Choice (4) Response

a.

Sodium

b.

Magnesium

c.

Calcium

d.

Phosphorus

Question number: 24

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

The trophic level of lion in a forest ecosystem is

Choices

Choice (4) Response

a.

T1

b.

T3

c.

T4

d.

T2

Question number: 25

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

If carbon dioxide is withdrawn from the biosphere, which organism would first experience negative effects?

Choices

Choice (4) Response

a.

Primary producers

b.

Secondary consumers

c.

Producers

d.

Tertiary consumers

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