Organisms living in open sea are called
Planktons
Nektons
Pelagic
Benthos
Carnivores are
What is the percentage of photosynthetically active radiation $(PAR)$, in the incident solar radiation.
$...A...$ is required for higher primary productivity. $...B...$ have the lowest primary productivity as the soil is deficient in moisture.
Choose the correct option for $\mathrm{A}$ and $\mathrm{B}$
Major conduit of energy in land and aquatic ecosystem is transferred through ______ and ______ respectively.
In an ecosystem, the insectivorous plants are placed in