Question # 1

The lowest trophic level of an ecosystem always includes.

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Herbivores

Carnivores

Producer

Decomposers

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

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Sun

Moon

Plants

Ocean

Example of Ectoparasite is:

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Becteria

Virus

Ascaris

Mosquito

The nitrate forming bacteria are.

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Rhizobium

Nitrosomonas

Nitrobacter

Cocci

In the atmosphere, carbon is found as

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graphite

diamond

carbonates

carbon dioxide

During nitrogen fixation nitrogen is converted into:

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Nitrates

nitrates

ammonia

all to these

Which one is not biotic factor.

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Plants

Animal

Mud

Bacteria

All populations collectively are called.

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Species

Blome

Community

Ecosystem

The base of food chain is always formed by:

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Producers

Consumers

Decomposrs

Heterotrophs

Ectoparasite is:

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Ascaris

Amoeba

Plasmodium

Leech

Naturally found in graphite and diamond.

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Nitrogen

Oxygen

Hydrogen

Carbon

All herbivore animals are.

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Grass eater

Parasites

Predators

Prey

The study of the ralationship between orgaisms and their environment called:

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Biology

Microbiology

Ecology

Genetics

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