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

When a peacock displays its colourful feathers, it is

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

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

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