Question

A food chain can have trophic levels:

• A. Three or four
• B. Three
• C. Two
• D. One

Answer 1

The correct option is A Three or four

• Food chain in an ecosystem is defined as the passage of food from one trophic level to the next higher trophic level.
• A food chain can have 3 or 4 trophic levels.
• Plants are producers which are present in first trophic level.
• Primary consumers are second trophic levels which eat plants. They are herbivores.
• Secondary consumer are present make third trophic level. They eat primary consumers and are carnivores.
• Tertiary or top consumer make fourth trophic level. They are carnivores
• Thus, the correct answer is option A- 'Three or four.'