Question # 1

Primary source of energy for all ecosystem is.

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Electricity

Sun

Fire

Nutrients

Organisms in the ecosystem that are responisble for recycling of plant and animal wastes are:

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Producers

Consumers

Decomposers

Compititors

All populations collectively are called.

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Species

Blome

Community

Ecosystem

All ecosystems of the world combine to form.

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Community

Population

Biosphere

Competition

Decomposers are.

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Algae and bacteria

Mosses

Animal

Bacteria and Fungi

Which of the following is the abiotic component of an ecosystem?

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producers

Herbivores

Carnivorse

Oxygen

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

R-3 means.

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Less use

Reuse

Recycle

Refuse

Conversion of Nitrates into nitrogen gas is called.

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Denitrification

Assimilation

Ammonification

Nitrogen fixtation

________ is break down of the proteins of dead organisms to ammonia.

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Ammonification

Nitrification

Denitrification

None of these

When we eat the onion, our trophic level is

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Primary consumer

Secondary consumer

Decomposer

Producers

Organisms that make their own food with help of sunlight, CO and H₂O are called.

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Consumers

Producers

Decomposers

Predators

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10th Class Biology Chapter 16 Man and His Environment English Medium KPK Boards Online Mcqs MCQs With Answers

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