Science
Identify the food chain in which the organisms of the second trophic level are missing:
options
- Grass, goat, lion
- Zooplankton, Phytoplankton, small fish, large fish
- Tiger, grass, snake, frog
- Grasshopper, grass, snake, frog, eagle
Environment
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Answer
Tiger, grass, snake, frog
Reason — A food chain’s first trophic level is made up of producers (plants) and the second trophic level contains primary consumers (herbivores) that feed on those producers.
In the food chain — Tiger, grass, snake, frog — grass (a producer) is present but there is no herbivore shown that eats the grass before higher predators appear. The chain therefore lacks the primary-consumer (second trophic) level.
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