The planktonic forms are
Autotrophs
Heterotrophs
Chemotrophs
Insectivorous types
Food and energy relationships among living components of ecosystem is generally referred as
Which must be preserved in an ecosystem, if the system is to be maintained
The mass of living material at a trophic level at a particular time is called
What will happen to an ecosystem if :
$(a)$ All producers are removed;
$(b)$ All organisms of herbivore level are eliminated; and
$(c)$ All top carnivore population is removed