If the strong partner is benefitted and the weak partner is damaged,it is known as:

Which of the following interactions is represented by the $(-, +)$ relationship between species $A$ and species $B$ respectively?

$A$ bird enters the mouth of a crocodile and feeds on parasitic leeches. The bird gets food and the crocodile gets rid of blood-sucking leeches. Both partners can live independently. Such an association is:

Which of the following characteristics is described by Gause's competitive exclusion principle?

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.

Epiphyte is an example of