Definitions / Explanation :

$(i)$ Saprotrophs

$(ii)$ Trophic level

Which of the following is source of energy to an ecosystem

In relation to energy transfer in ecosystem, explain the statement "$10$ $kg$ of deer's meat is equivalent to $1$ $kg$ of lion's flesh".

The order of organism in an aquatic food chain is

Choose correct answer.

$(1)$ Zooplanktons are primary producers in an aquatic ecosystem.

$(2)$ Decomposition is largely an oxygen requiring process.

$(3)$ In a natural ecosystem, fishes, wolf, etc. are carnivore.

$(4)$ The amount of energy decreases in each successive trophic level.