Question

Phytoplankton are destroyed. It will

• A. Cause spurt in population of primary consumers
• B. Rapid growth of algae
• C. Affect the food chain
• D. Have no effect

Answer 1

The correct option is C Affect the food chain

If all phytoplankton are destroyed, it will affect the food chain. All animals shall die ultimately in the absence of phytoplankton. In an ecological pyramid, green plants or phytoplankton are present at the base of pyramid. They are present in primary trophic level. So, if the primary trophic level is destroyed, energy will not be transferred from primary to secondary trophic level. Eventually, all animals in secondary, tertiary and so on trophic level will die.

Thus, the correct answer is 'Affect the food chain.'