Which one of the following is a right matching pair of certain organism$(s)$ and the kind of association?

Which of the following statements regarding species interdependence are true?
$I.$ An association of two species where one is benefited and the other remains unaffected is called mutualism.
$II.$ An interspecific association where both partners derive benefit from each other is called commensalism.
$III.$ $A$ direct food relation between two species of animals in which one animal kills and feeds on another is referred to as predation.
$IV.$ $A$ relationship between two species of organisms where both partners are benefited from each other is called symbiosis.

Identify the correct adaptations of parasites from the following list:
$a.$ Loss of unnecessary sense organs
$b.$ Presence of adhesive organs
$c.$ Presence of suckers
$d.$ High reproductive capacity
$e.$ Well-developed digestive system
Choose the correct option with respect to parasites.

What type of relationship is observed between insect-pollinated flowers and their pollinators?

Which of the following is correctly categorized as a parasite?

Given below are two statements:
Statement $I$: Competition can be defined as a process in which the fitness of one species is significantly lower in the presence of another species.
Statement $II$: According to Darwin,interspecific competition is a potent force in organic evolution.