Correct option is D
Ans. (D) Primary consumers
Explanation:
Herbivores are organisms that consume plants for food. They are classified as primary consumers in the food chain because they feed directly on producers (plants or other autotrophs). Primary consumers are the second trophic level in an ecosystem, after producers.
Information Booster:
Producers (First Trophic Level): Organisms like plants and algae that produce their own food through photosynthesis and are consumed by herbivores.
Primary Consumers (Second Trophic Level): Herbivores that feed on producers (plants). Examples include cows, deer, and rabbits.
Secondary Consumers (Third Trophic Level): These organisms feed on primary consumers. Examples are carnivores or omnivores like wolves or humans.
Tertiary Consumers (Fourth Trophic Level): These are apex predators that feed on secondary consumers. Examples include lions and eagles.