Environmental Science and Ecology - Mock Test 81

Question 801

Barnacles growing on the back of whale is an example for?

A) mutualism B) parasitism C) amensalism D) commensalism

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Question 802

A high density of elephant population in an area can result in?

A) mutualism B) Intraspecific competition C) Interspecific competition D) Predation on one another

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Question 803

Species that occur in different geographical regions separated by special barrier are?

A) Allopatric B) Sympatric C) Sibling D) None of the above

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Question 804

MAB stands for?

A) Man and biosphere B) Man, antibiotics and bacteria C) Man and biotic community D) Mayer, Anderson and Bisby

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Question 805

In a food chain of grassland ecosystem the top consumers are?

A) Herbivorous B) Carnivorous C) Bacteria D) Either carnivorous or herbivorous

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Question 806

Biotic potential is counteracted by?

A) Competition with other organisms B) Producer is the largest C) Limitation of food supply D) None of the above

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Question 807

Trophic levels are formed by?

A) Only plants B) only animals C) Only carnivorous D) Organisms linked in food chain

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Question 808

An ecosystem must have continuous external source of?

A) minerals B) energy C) food D) All of the above

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Question 809

Energy flow in ecosystem is?

A) Unidirectional B) Bidirectional C) Multidirectional D) None of the above

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Question 810

The pyramid of energy in any ecosystem is?

A) Always upright B) May be upright or invented C) Always inverted D) None of the above

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