Environmental Science and Ecology - Mock Test 9

Question 81

Energy storage at consumer level is called

A) gross primary productivity B) secondary productivity C) net primary productivity D) net productivity

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Question 82

In a pond ecosystem, benthos means

A) epineuston B) periphyton C) zooplankton on the water surface D) primary consumers in the depth of a pond

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Question 83

In a food chain, the total amount of living material, is depicted by

A) pyramid of energy B) pyramid of numbers C) pyramid of biomass D) all of these

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Question 84

In an ecosystem, bacteria are considered as

A) microconsumers B) macroconsumers C) primary consumers D) secondary consumers

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Question 85

Stability of ecosystem depends upon

A) primary productivity B) interchange between producers and consumers C) number of producers D) number of consumers

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Question 86

Which is not correct for ancient plants

A) They have photosynthetic pigment B) They are primitive algae like C) They use H2S as hydrogen source D) They release O2 as by product

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Question 87

Animals which occupy the same trophic level are

A) tiger and bees B) deer and bees C) snake and earth worm D) crow and cow

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Question 88

Pneumatophores are found in vegetation of which ecosystem

A) desert B) tropical rain forest C) mangroves of sunderban D) taiga

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Question 89

Succession in saline soil is

A) mesosere B) lithosere C) psammosere D) halosere

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Question 90

Zone of transition present between two types of communities for special ecological interest is called

A) ecotype B) ecotone C) border effect D) niche

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