The leech and the earthworm belong to the

The association in which one member benefits and the other is relatively unaffected by the interaction is termed

An evidence of a common ancestral for fishes, amphibians, reptiles, birds and mammals is the

The importance of practising crop rotation in agriculture is to

A yellow maize is crossed with a white maize and the first filial generation produce yellow maize only. The white trait is said to exhibit

The only caste in the termite colony are the members can feed themselves are the

When an animal has a dark-coloured dorsal surface and a light-colouration ventral surface, this is an adaptation called

When a peacock displays its colourful feathers, it is

Which of the following is used to test for the presence of lime in a soil sample?