The mutation theory of organic evolution was propounded by

A certain savanna grasshopper changes colour from green during the rainy season to brown during the dry season and black after dry season bush fires. The reason for these colour changes is that the

Complex social behaviour and organization are found mostly in

Which of the following structural features are adapted for uses other than water conservation?

An association between the root nodule of a leguminous plant and rhizobium sp, is known as