In a terrestial ecosystem such as forest, maximum energy is in which trophic level
$T_1$
$T_2$
$T_3$
$T_4$
In an ecosystem bacteria are considered as
The second order consumer in a food chain is
Biological equilibrium is an equilibrium among the
Consider the following statements about food chain
$I.$ The transfer of energy from producers to top consumers through a series of organisms is called food chain
$II.$ A food chain is always straight and proceeds in a progressive straight line
$III.$ In a food chain, there is unidirectional flow of energy from sun to producers and subsequently to series of different types of consumers
Which of the statements given above are correct?
Which of the following is a primary consumerin maize field ecosystem ?