Environmental Science and Ecology - Mock Test 50

Question 491

When the number of organisms at successive levels are plotted, they assume the space of a pyrami4⃣ This is called the pyramid of?

A) Energy B) Number C) Biomass D) This is called the pyramid of? 1⃣ Energy 2⃣ Number 3⃣ Biomass

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Question 492

If phytoplanktons are destroyed from sea, then?

A) Algae will get more grow luxuriantly B) Primary consumers will grow C) Food chain will be effected D) No effect will be seen

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Question 493

Relative biological effectiveness (RBE) is usually referred to damages caused by?

A) Pollution B) High temperature C) Low temperature D) Radiation

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Question 494

The flora and fauna in lakes and ponds represents?

A) Lentic biota B) Latic biota C) Abiotic D) None of these

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Question 495

In an upright pyramid of biomass, the herbivores occupy the position?

A) 4 B) 2 C) 3 D) 1

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Question 496

In food chain, herbivores are?

A) Producer B) Primary consumer C) Secondary consumers D) Decomposers

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Question 497

Which ecosystem has the highest primary productivity?

A) Pond ecosystem B) Lake ecosystem C) Grassland ecosystem D) Forest ecosystem

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Question 498

The part of earth in which life exists is known as?

A) Lithosphere B) Biosphere C) Atmosphere D) Hydrosphere

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Question 499

Energy enters into the ecosystem through?

A) Herbivores B) Carnivores C) Producers D) Decomposers

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Question 500

Which are the biotic components of forest ecosystem?

A) Producers B) Decomposers C) Consumers D) All of the above

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