$I.$ Some species of insects and frogs are critically coloured (camouflaged)

$II.$ Some animals are poisonous

$III.$ Monarch butterfly are distasteful

The above adaptations are against

Give a suitable example for commensalism.

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 $C$

Examples of chemicals produced by plants as a defense against grazers and browsers

$I.$ Nicotine

$II.$ Caffeine

$III.$ Quinine

$IV.$ Strychnine

$V.$ Opium

Choose the correct combination

One of the major difficulties in the biological control of insect pests is that

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