Question

Differentiate between the food habits of organisms belonging to first and second tropic levels?

Answer 1

Animals belonging to first trophic level:
These are known as autotrophs as they use autotrophic mode of nutrition. They produce their own food using different substances available in the environment and are not dependent on other organisms for their food.
Second tropic level:
These are known as herbivores as they use holozoic mode of nutrition. They consume autotrophs to fulfill their energy requirements. Hence, they are 'dependent'.