In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct$?$
There is no relationship between Gross primary productivity and Net primary productivity.
Gross primary productivity is always less than net primary productivity.
Gross primary productivity is always more than net primary productivity.
Gross primary productivity and Net primary productivity are one and same.
Plants growing in saline and marshy conditions are called
Group of two or more than two plant species is called as
Arrange the following as observed in vertical stratification of a forest : Grass, Shrubby plants, Teak, Amaranths.
The vegetation of Delhi is chiefly
Among the plants listed, point out one that does not fit into ecological group represented by other plants