Some species of insects and frogs are ....... to avoid being easily detected by the predator.

Which of the following is $NOT$ an adaptation for parasites?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $(A)$: Recent studies do not entirely support the Gause's 'Competitive Exclusion Principle' in nature.
Reason $(R)$: Recent studies of competition rule out the occurrence of interspecific competition in nature.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which characteristic is observed in the $Gause's$ Competitive Exclusion Principle?

While living in and on the host species, the animal parasite has evolved certain adaptations. Describe these adaptations with examples.

Which of the following is most appropriately defined?