Environment and Ecology
2015
Ecology & Ecosystems
Which one of the following is the correct sequence of a food chain?
C.Diatoms-Herrings-Crustaceans
B.Crustaceans-Diatoms-Herrings
D.Crustaceans-Herrings-Diatoms
A.Diatoms-Crustaceans-Herrings
Correct Answer: Option A
A food chain represents the flow of energy from one organism to another.
In the given options, Diatoms are primary producers (phytoplankton) in aquatic ecosystems. Crustaceans are primary consumers that feed on diatoms. Herrings are secondary consumers that feed on crustaceans.
Therefore, the correct sequence is Diatoms → Crustaceans → Herrings.
Hence, option a is the correct answer.
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