Environmental Science and Ecology - Mock Test 14

Question 131

Tropical dense forest is due to

A) low rainfall & low temperature B) high rainfall & low temperature C) low rainfall & high temperature D) all

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Question 132

Source of energy in an ecosystem is

A) sun B) ATP C) sugar D) green plants

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Question 133

Humus is good for plant growth because

A) it improves physical condition of soil B) it makes soil porous C) it increases water holding & aeration of soil D) all

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Question 134

Which one of the following is nature's cleaner

A) consumers B) producers C) decomposers and scavengers D) symbionts

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Question 135

In a food chain herbivores are

A) primary producers B) primary consumers C) secondary consumers D) decomposers

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Question 136

A food chain can have trophic levels

A) four B) three C) two D) one

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Question 137

Biotic components of an ecosystem include

A) producers, consumers and decomposers B) producers and consumers C) producers only D) consumers only

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Question 138

The driving force for an ecosystem is

A) biomass B) producers C) carbohydrates in producers D) solar energy

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Question 139

In an ecosystem the function of the producers is

A) to convert organic compound into inorganic form B) to utilize chemical energy C) to trap solar energy and convert into chemical energy D) to release energy

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Question 140

Grasshopper in grassland is a

A) producer B) herbivore C) carnivore D) scavenger

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