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

Question # 1

Ectoparasite is:

Choose an answer

Ascaris

Amoeba

Plasmodium

Leech

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Question # 2

One of these cycles is also nutrients cycles.

Choose an answer

Biogeochemical cycles

Carbon cycles

Water cycles

Nitrogen cycles

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Question # 3

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

Choose an answer

Ammonification

Nitrification

Denitrification

None of these

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Question # 4

Which of the following air pollutant react with water in atmosphere producing acid rain?

Choose an answer

Hydrocarbons fluorine

Flyash, soot

chlorine , smoke

Sulphur dioxide, Nitrogen oxide.

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Question # 5

The factor of an ecosystem is:

Choose an answer

light

algae

bacteria

producers

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Question # 6

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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Question # 7

Nitrobactor bacteria converts nitrites into:

Choose an answer

nitrogen

nitrates

urea

ammonia

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Question # 8

During nitrogen fixation nitrogen is converted into:

Choose an answer

Nitrates

nitrates

ammonia

all to these

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Question # 9

The major process that brings carbon from atmosphere into living world is:

Choose an answer

Photosynthesis

Respiration

Both a and b

None of these

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Question # 10

Which one of the following is tertiary consumer.

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Owl

Larva of burtterfly

Deer

Rabbit

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Question # 11

In the food chain ''grass→grasshopper''→sparrow→ hawk'',the secondary consumers is:

Choose an answer

grass

grasshopper

sparrow

hawk

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Question # 12

Which of the following is the abiotic part of ecosystems?

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Grass

Goat

Lion

Soil

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Question # 13

Biospher surrounding the earth is about:

Choose an answer

17 km

18 km

19 km

20 km

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