$A$ : An ecological niche is usually occupied by a single species.
$R$ : More than one species can live in same habitat.
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
$A$ : Fig species and wasp have tight one to one relatioinship.
$R$ : Angiosperms and insects are coevolved to perform a plant-pollinator interaction.
While explaining interspecific interaction of population, $(+)$ sign is assigned for beneficial interaction,$(-)$ sign is assigned for detrimental interaction and $(0)$ for neutral interaction. Which of the following interactions can be assigned $(+)$ for one species and $(-)$ for another species involved in the interaction?
Which of the following is incorrect w.r.t. competition?
Commensalism is the interaction in which
Competition for light, nutrients and space is most severe between