Q48 of 163 Page 228

Which of the following represents a possible food chain found in a pond:

This represents a possible food chain in a pound. Green algae produce food which is consumed by mosquito larvae (primary consumers/zooplankton). Mosquito larvae are eaten by fishes that are secondary consumers.

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46

Which of the following constitutes a food chain?

 47

In a food chain, the initial organism is usually:

 49

Which of the following are decomposers of dead organisms?




























Bacteria



Fungi



Viruses



(a) no



yes



yes



(b) yes



no



yes



(c) yes



yes



no



(d) yes



yes



yes


 50

Which of the following is an artificial ecosystem?