Between which among the following, the relationship is not an example of commensalism?
Orchid and the tree on which it grows
Cattle Egret and grazing cattle
Sea Anemone and Clown fish
Female wasp and fig species
Which of the following statements is incorrect
Definitions / Explanation : Key stone species
Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as
$A$ : An ecological niche is usually occupied by a single species.
$R$ : More than one species can live in same habitat.
Name important defence mechanisms in plants against herbivory.