In a pond ecosystem, benthos means
Primary consumers in the depth of a pond
Virus
Zooplankton on the water surface
Bacteria
In an ecosystem, there is flow of energy at different trophic levels. This is as follows :
The total energy fixed by a gram plant (Cicer arietinum) in an ecosystem on the whole is called
Mr. $X $ is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying
The biotic part of ecosystem includes