Association between suckerfish $ (Remora) $ and shark is

Choose correct group for commensalism from the following

$(a)$ The cattle egret and grazing cattle

$(b)$ Barnacle balanus and Barnacle chathamalus

$(c)$ Goat and Abingdon turtle from Galapagosisland

$(d)$ Barnacles growing on the back of whale

The principle of competitive exclusion was stated by

‘Resource partitioning’ is an important mechanism which promotes

Give a suitable example for commensalism.

Give the scientific names of any two microorganisms inhabiting the human intestine.