Environmental Science and Ecology - Mock Test 30

Question 291

Pyramid of energy in ecosystems is ?

A) Always upright B) Always inverted C) Mostly upright D) Mostly inverted

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Question 292

Stratification is more common in ?

A) Deciduous forest B) Tropical rain forest C) Temperate forest D) Tropical savannah

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Question 293

Organisms which break down detritus into matter particles ?

A) Herbivores B) Carnivores C) Detritivores D) None of these

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Question 294

Succulent plants grow in ?

A) Tundra B) Deserts C) Tropical rain forests D) Temperate deciduous forests

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Question 295

Of the total incident solar radiation the proportion of PAR is ?

A) More than 80% B) About 70% C) About 60% D) Less than 50%

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Question 296

The 10% law for energy transfer in food chains was given by ?

A) Stanley B) Tranley C) Lindemann D) Weismann

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Question 297

In an ecosystem, the main source of energy is ?

A) heat released during transpiration B) solar energy C) sugar stored in plants D) heat released during fermentation

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Question 298

Biotic factors refer to ?

A) Gases produced by industries B) Nutrient-deficient soils C) Living organisms D) Fossil fuel

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Question 299

The ecological pyramid which can be inverted in a tree eco-system is ?

A) Pyramid of Number B) Pyramid of Energy C) Pyramid of Biomass D) both (b) and (c)

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Question 300

Microbes that break down the complex organic matter into simple substances like carbon, nitrogen, water etc. are ?

A) Producers B) Decomposers C) Consumers D) Symbionts

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