A sedentary sea anemone gets attached to the shell lining of hermit crab. The association 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

. Explain parasitism in detail

There is more competition for survival between

In an association of two animal species, one is a termite which feeds on wood and the other is a protozoan Trichonympha present in the gut of the termite. What type of association they establish ?

Give scientific reasons : Clown fish and sea anemone pairs up.