Environmental Science and Ecology - Mock Test 11

Question 101

Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct

A) Its base is broad B) It shows energy content of different trophic level organisms C) It is inverted in shape D) It is upright in shape

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Question 102

Mass of living matter at a trophic level in an area at any time is called

A) standing crop B) deteritus C) humus D) standing state

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Question 103

About 70% of total global carbon is found in

A) grasslands B) agroecosystems C) oceans D) forests

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Question 104

Which one of the following is not used for construction of ecological pyramids

A) Number of individuals B) Rate of energy flow C) Fresh weight D) Dry weight

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Question 105

An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having

A) low stability and high resilience B) high stability and low resilience C) low stability and low resilience D) high stability and high resilience

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Question 106

The greatest biomass of autotrophs in the oceans is that of

A) sea grasses and slime moulds B) free floating microalgae, cyanobacteria and nanoplankton C) benthic brown algae,coastal red algae and diatoms D) benthic diatoms and marine viruses

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Question 107

What is true about ecosystem

A) Primary consumers are least dependent upon producers B) Primary consumers out-number producers C) Producers are more than primary consumers D) Secondary consumers are the largest and most powerful

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Question 108

Upper part of sea aquatic ecosystem contains

A) plankton B) nekton C) plankton and nekton D) benthos

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Question 109

The rate at which light energy is converted to the chemical energy of organic molecules is the ecosystem’s

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

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Question 110

Which of the following ecosystems have highest rate of gross primary production

A) Grasslands B) Mangroves C) Coral reefs D) Equatorial rain forest

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