Population was termed as self- perpetuating unit by

Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

Water holding capacity is maximum in case of

The maximum growth rate occurs in

The greatest problem of water conservation is to reduce the amount of

A permanent loss to a population is due to

Lichens are well known combination of an alga and a fungus, where fungus has

Carrying capacity of environment is determined by

The association between Rhizobium and roots of leguminous plants is

The study of interactions between living organisms and environment is called as