Environmental Science and Ecology - Mock Test 8

Question 71

Green house gases include

A) CO₂, CFC, CH₄ & NO₂ B) CO₂, O₂, N₂, NO₂ & NH₃ C) CH₄, N₂, CO₂ & NH₂ D) CFC, CO₂, NH₃ & N₂

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Question 72

Find the wrongly matched pair

A) Autotrophs – Fungi B) Primary consumers – Zooplankton C) Secondary consumers – Fishes D) Decomposers – Flagellates

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Question 73

Which one of the following pairs is a sedimentary type of biogeochemical cycle

A) Phosphorus and Carbon monoxide B) Oxygen and Nitrogen C) Phosphate and Nitrogen D) Phosphorus and Sulphur

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Question 74

The primary difference between sedimentary and atmospheric cycles is that in _____ cycles the nutrient does not _____

A) sedimentary; leave the terrestrial environment B) sedimentary; leave the aquatic environment C) atmospheric; leave the aquatic environment D) sedimentary; enter the atmosphere

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Question 75

Ecosystem creates

A) food chain B) food web C) both the above D) none of the above

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Question 76

A man-made ecosystem is

A) less in diversity B) more in diversity C) man does not make ecosystem D) more stable than natural ecosystem

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Question 77

Micro-organisms are

A) primary consumers B) secondary consumers C) tertiary consumers D) decomposers

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Question 78

The natural cycles of carbon, oxygen, nitrogen, water, phosphorus, sulphur etc are collectively called as

A) chemical cycles B) geological cycles C) material cycles D) none of the above

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Question 79

The communities of primary succession are called as

A) sub sere B) meso sere C) pioneer sere D) none of the above

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Question 80

Food chain is a series of population which starts with producers. It is concerning with

A) biotic components only B) energy flow and transfer of nutrients C) both a and b D) biotic and decomposers

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