Environmental Science and Ecology - Mock Test 58

Question 571

The ecosystem lying in the alpine zone between taiga and polar ice is called?

A) Savana B) Autotrophic C) Heterotrophic D) Tundra

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Question 572

The ration of food energy assimilated to the food energy ingested is called?

A) Trophic level efficiency B) Photosynthetic efficiency C) Net production efficiency D) Assimilation efficiency

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Question 573

The primary consumers are described as?

A) Herbivores B) Converters C) Transducers D) All of these

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Question 574

The term reducer is applied to?

A) Decomposers B) Detrivores C) Both 1⃣ & 2⃣ D) Heterotrophs

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Question 575

The percentage of light energy utilized for photosynthesis by higher plants is?

A) 100 B) 50 C) 10 D) 1

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Question 576

Which of the following terms is not a synonym literally for ecosystem?

A) Ecosom B) Ecosphere C) Microcosm D) Holocoene

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Question 577

A man is the part of biotic community?

A) Always B) Only when he lives in big cities C) Only when he lives in forest D) Never

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Question 578

The ecosystem exists in a state of 'balance'. Supposing one of the heterotrophs, says the rabbit, multiplies and increases in number suddenly then?

A) The balance will be permanently upset because the rabbits will eat the grass in the system and die of starvation B) The 'balance' will be restoredby an increase in the wolf population C) Epidemics will break out in the rabbits and kill all of them D) Rabbits will starts eating each other

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Question 579

Plants constitute the?

A) Third trophic level B) Fourth trophic level C) First trophic level D) Second trophic level

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Question 580

The source of energy in an ecosystem is?

A) sugar stored in plants B) Light received from the sun C) Heat liberated during fermentation D) Heat liberated during respiration

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