Mr. $X $ is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying
First trophic level
Second trophic level
Third trophic level
Fourth trophic level
In a pond ecosystem, benthos means
Definitions / Explanation :
$(i)$ Saprotrophs
$(ii)$ Trophic level
The green plants in an ecosystem which can trap solar energy to convert it into chemical bond energy are called
The number of trophic levels in a food chain is limited to $4$ or $ 5$ because