Q: Which one of the following is the correct sequence of a food chain?
a) Diatoms-Crustaceans-Herrings
b) Crustaceans-Diatoms-Herrings
c) Diatoms-Herrings-Crustaceans
d) Crustaceans-Herrings-Diatoms
The correct answer is Option 1.
⦁ Diatoms are autotrophs which prepare their own food.
⦁ Crustaceans are herbivorous animals which feed on diatoms.
⦁ Herrings are carnivorous animals which feed on Crustaceans. This completes the food chain.
⦁ Diatoms are autotrophs prepare their own food. Crustaceans eats diatoms. Crustaceans’ members of zoo plants and are eaten by Herring fish when small. Hence, Option 1 is correct.
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