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

Question # 1

______ get solar energy and transform it into chemical energy by the process of photosynthesis.

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Decomposers

Producers

consumers

Predators

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Question # 2

The type of symbiotic association in which partner gets benefits while ohter is neither benefited nor harmed is called.

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Commenaslism

Mutualism

Parasitism

Predation

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Question # 3

All ecosystem of the world join and makees:

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Biosphere

Heterosphere

Geosphere

Hydrosphere

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Question # 4

The nitrate forming bacteria are.

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Rhizobium

Nitrosomonas

Nitrobacter

Cocci

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Question # 5

------------ is use for the cleaning of sewage water.

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Bacteria

Virus

Algae

Fungi

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Question # 6

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 # 7

R-2 means.

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Reduce

Recycle

Renewable

Reuse

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Question # 8

Abiotic component of ecosystem is.

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Producers

Herbivores

carnivore

Oxygen

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Question # 9

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 # 10

Which of the following is not an example of green house gas?

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CO₂

Methane

Oxygen

Nitrous oxide

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Question # 11

the type of symbolic association in which partner gets benefits while other is neither benefited nor harmed is called:

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Commensalism

Mutualism

Parasitism

Predation

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Question # 12

Conversion of urea and uric acid into Ammonia is called.

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Assimilation

Nitrogen fixation

Ammonification

Biological fixation

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Question # 13

An epiphyte is an example of:

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Parasitism

Mutualism

Commensalism

Symbiosis

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