Niche overlap indicates:

Match the following columns correctly.

Column-$I$	Column-$II$
$(a)$ Plasmodium	$(i)$ Partial parasite
$(b)$ Cuscuta	$(ii)$ Endoparasite
$(c)$ Bacteriophage	$(iii)$ Ectoparasite
$(d)$ Viscum	$(iv)$ Hyperparasite

Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.

Louse is an ectoparasite of

The orchid $Ophrys$ employs 'sexual deceit' to get pollinated by a species of bee. One petal of its flower bears an uncanny resemblance to the female of the bee in size,colour,and markings. The male bee perceives it as the female and attempts to copulate with the flower. During this process,pollen grains are dusted on the male bee's body. What is this phenomenon called?

What does Gause's Competitive Exclusion Principle state?