Which of the following groups is absolutely essential functional component of the ecosystem?
Producers
Producers and herbivores
Producers and detritivores
Detritivores
Greater primary productivity depends upon
Which of the following is a primary consumerin maize field ecosystem ?
What is the percentage of photosynthetically active radiation $(PAR)$, in the incident solar radiation.
The number of trophic levels in a food chain is limited to $4$ or $ 5$ because
In a biotic community, primary consumers are