Trophic level in an ecosystem represents the 

Monjur Alahi

Trophic level in an ecosystem represents the 

A) Water level 

B) Energy level 

C) Salt level 

D) CO, level


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Salim Ahmed Kawsar

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(B) Energy level

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The graphic representation of the feeding level of an ecosystem is …………

(C) Ecological pyramid

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In a food chain, the third trophic level is always occupied by : 

(A) carnivores

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The transfer of energy from one trophic level to other trophic level

(D) 10 – 20 %

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Which of the following represents a food chain in a pond ecosystem ?

D) Green algae mosquito larvae fish

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In the food chain below, if the amount of energy available at fourth trophic level is 5 KJ, what is the

Answer is (C) 5000 KJ

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The tendency of pollutants to concentrate as they move from one trophic level to the next is …………

B) Bio – magnification

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Desert is an ecosystem. The conditions are different when we compare other terrestrial ecosystem. Rainfall is very less. Plants

D) all the given

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Terrestrial Ecosystem : Forest :: Aquatic Ecosystem: ? 

Answer is (B) River

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The second trophic level in a lake is …….

(b) Zooplankton

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Why do producers always occupy the first trophic level on every food chain?

Because producers (plants) have the ability to trap solar energy with the help of chlorophyll.

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