Q4 of 22 Page 256

Secondary producers are

A. Herbivores


B. Producers


C. Carnivores


D. None of the above

D: None of the above

Plants are considered as the primary producers as they entrap the solar energy through the process of photosynthesis and convert inorganic carbon di-oxide into organic compounds. This energy is then transferred to the second tropic level i.e. primary consumer. So there are no secondary producers in the food chain.


More from this chapter

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2

Which one of the following has the largest population in a food chain?

A. Producers


B. Primary consumers


C. Secondary consumers


D. Decomposers

 3

The second trophic level in a lake is

A. Phytoplankton


B. Zooplankton


C. Benthos


D. Fishes

 5

What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation?

A. 100%


B. 50 %


C. 1-5%


D. 2-10%

 6

Distinguish between

Grazing food chain and detritus food chain