In an aqueous environment, the microscopic animals are collectively called

Choose incorrect pair.

An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female of his species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called

American lakes visiting flamingoes and resident fishes compete for their common food ...$A$... in the lake resources ...$B$... limiting for competition to occur; in interference competition, the feeding efficiency of one species might be ...$C$... due to the interfering and inhibitory presence of the other species, even if resources (food and space) are abundant

Choose the correct option for $A , B$ and $C$

Definitions / Explanation : Key stone species

Name important defence mechanisms in plants against herbivory.