Environmental Science and Ecology - Mock Test 48

Question 471

Nektons are?

A) Organisms that swim in water B) Floating plants C) Suspended lower plants D) Animals associated with plants

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Question 472

During anaerobic digestion of organic waste, such as in producing biogas, which of the following is left undergraded?

A) Lignin B) Lipids C) Cellulose D) Hemi-cellulose

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Question 473

Plants like Saccharum. Imperata, Capparis and Acacia occur in the following biome?

A) Temperatr grassland B) Tropical savannah C) Tropical rain forest D) Desert

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Question 474

Azolla is used as a biofertilizer because it?

A) Multiplies very fast to produce massive biomass B) Has association of nitrogen-fixing Rhizobium C) Has association nitrogen fixing Cyanobacteria D) Has association of mycorrhiza

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Question 475

Carbon cycle includes?

A) Producer, consumer, decomposer B) Producer, consumer, producer C) Producer , decomposer, consumer D) Consumer, producer, decomposer

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Question 476

Which of the following food chain may not be directly dependent upon solar energy?

A) Grazing B) Detritus C) Soaking D) Depleting

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Question 477

Which type of the following ecological pyramids are never inverted?

A) Pyramids of number B) Pyramids of energy C) Pyramids of biomass D) Pyramids of dry biomass

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Question 478

If bamboo plant is growing in a far forest then what will be its trophic level?

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

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Question 479

In food chain initial organisms are?

A) Top consumers B) Secondary consumers C) Primary consumers D) Photo synthesizers

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Question 480

This is an inverted pyramid?

A) Pyramid of numbers in a grassland ecosystem B) Pyramid of energy in a pond ecosystem C) Pyramid of biomass in a grassland ecosystem D) Pyramid of biomass in a pond ecosystem

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