In an ecosystem bacteria are considered as
Microconsumers
Macroconsumers
Primary consumers
Secondary consumers
Justify the pitcher plant as a producer.
Which of the following ecosystems has highest productivity?
How many sentence are correct?
$(1)$ The trophic levels in $GFC$ are unlimited
$(2)$ Organisms at each trophic level depend on those at the higher trophic level for their energy demands.
$(3)$ Plants capture only $2 -10$ percent of $PAR$.
$(4)$ All organisms are dependent for their food on producers, either directly or indirectly.
Nektons are