$A$ plant growing on another plant without drawing any nourishment is

Explain sexual deceit.

Which of the following is not a defence evolved by a prey to avoid predators?

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

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.

Explain predation with a suitable example.