What is brood parasitism ? Explain with the help of an example.
Brood parasitism in birds is a fascinating example of parasitism.
$\Rightarrow$ In this parasitism, the parasitic bird lays its eggs in the nest of its host and let the host incubate them.
During the course of evolution, the eggs of the parasitic bird have evolved to resemble the host's egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest.
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
Given below are two statements:
Statement $I$: Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely.
Statement $II$: According to Gause's principle, during competition, the inferior will be eliminated. This may be true if resources are limiting.
In the light of the above statements, choose the correct answer from the options given below :
Describe commensalism.
In commensalism
Association between suckerfish $ (Remora) $ and shark is