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
$A-$exceeding; $B-$increasing
$A-$maintaining; $B-$reducing
$A-$reducing; $B-$maintaining
$A-$maintaining; $B-$increasing
An association of two species where both the partners derive mutual benefit from each other is
Definitions / Explanation : Key stone species
Find odd one out, according to parasitism.
An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?
Name important defence mechanisms in plants against herbivory.