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Biology 10th Class English Medium Chapter 16 Online Test MCQs With Answers

Question # 1

Primary source of energy for all ecosystem is.

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Electricity

Sun

Fire

Nutrients

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Question # 2

The total amount of living matter in an ecosystem at any time is called.

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Biomass

Energy

Food Chain

Food web

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Question # 3

At the end of a long food chian the energy will be.

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Will more

As same as at start

Will less

Zero

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Question # 4

The only source of energy for all ecosystems of the world is.

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Sun

Moon

Plants

Ocean

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Question # 5

Which are put in first trophic level?

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Carnivores

Producers

Herbivores

Consumers

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Question # 6

Which form of nitrogen is taken by the producers of the ecosystem?

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Nitrogen gas

Ammonia

Nitrates

Nitrites

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Question # 7

Abiotic component of the ecosystem is:

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Producers

Consumers

Decomposers

Light

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Question # 8

A relationship between species in which both species benefit is called.

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Parasitism

Mutualism

Symbiosis

Commensalism

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Question # 9

The conversion of ammonia to nitrates is carried out by soil bacteria. This process is called.

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Nitrification

Denitrification

Nitrogen fixation

Assimilation

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Question # 10

Example of Endoparasite is:

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Plasmodium

Mosquito

Leech

Lices

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Question # 11

One of these cycles is also nutrients cycles.

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Biogeochemical cycles

Carbon cycles

Water cycles

Nitrogen cycles

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Question # 12

Which one of the following is not a temporary parasite?

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Mosquito

Virus

Leech

Bed bug

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Question # 13

Identify the correctly matched pair:

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Rainfall biotic factors in ecosystem

Global warming formation of fossil fuels

Renewable natural resources air

Corn secondary consumer

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