The aquatic organism that can actively swim at will against the water current is
Neuston
Plankton
Nekton
Benthos
In the following, there is no difference.
Which of the following in an ecosystem exhibits one-way flow rather than cyclic flow
$A$ : In secondary productivity, no new organic matter is formed.
$R$ : It is only utilisation of part of food manufactured by primary producers in building of consumer biomass.
When spontaneous process occurs then free energy of system
It is included in tertiary consumer.