When one organism is benefitted without affecting the others is called
Parasitism
Commensalism
Saprophytism
Symbiosis
Which of the following statements is true regarding individuals of same species
An association of two species where both the partners derive mutual benefit from each other is
$A$ : Cattle or goat never graze on Calotropis.
$R$ : Thorns are present as a morphological means of defence
Predators also help in ...$A$... species diversity in a community, by ... $B$... the intensity of competition among competing prey species. Here $A$ and $B$ can be