If phytoplanktons are destroyed in the sea,then

They are not included in decomposers.

Choose the incorrect statement.

Assertion $A$: As a result of evolution,plant species have migrated from aquatic habitats to terrestrial habitats.
Reason $R$: Plants have undergone developmental changes while passing through various stages of succession.
Which option is correct for Assertion $A$ and Reason $R$?

Match the columns:

Column-$I$	Column-$II$
$(a)$ Decomposers	$(i)$ Bacteria
$(b)$ Primary productivity	$(ii)$ Consumers
$(c)$ Natural ecosystem	$(iii)$ Producers
$(d)$ Secondary productivity	$(iv)$ Forest

$A$: The soil of tropical rain forests has a low base content.
$R$: Such soil shows less percolation and leaching.