Question # 1

Living of nitrogen fixing bacteria in the roots nodules of Leguminous plant is an example of.

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Predation

Parasitism

Mutualism

Commensalism

Which of the following is the abiotic part of ecosystem.

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Grass

Goat

Lion

Soil

250 years age, the population of world was approximately ------------ million.

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400

500

600

700

Formation of Nitriates and nit5rates from ammonia is called.

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Nitrification

Ammonification

Denitrification

Assimilation

The populations that live in a habitat and interact with one another are collectively called.

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Biosphere

Ecosystem

Community

species

The base of food chain is always formed by:

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Producers

Consumers

Decomposrs

Heterotrophs

A group of organisms, similar to one another, which can interbreed in nature and produce fertile off springs.

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Species

Genus

Family

Population

In the food chain"grass......rabbit....... fox..............bear...........mushroom", how many types of decomposers are present"?

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1

2

3

4

Consumers include:

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animals

protozoans

fungi

all of these

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

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CO₂

Methane

Oxygen

Nitrous oxide

An example of carnivores plant is.

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Mosses

Ferns

Rose plant

Sundew

conversion of the nitrogen gas into nitrates is called.

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Denitrification

Nitrogen fixation

Assimilation

Ammonification

Example of Endoparasite is.

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Plasmodium

Mosquito

Leech

Lices

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