$A$ parasite that lives on another parasite is called:

What is the effect of a parasite on the host?

What kind of interrelationships exist between organisms in the biosphere?

Mycorrhiza is an example of which of the following?

Given below are two statements.
Statement $I$: Intraspecific competition occurs between organisms of the same population.
Statement $II$: Such interaction may be beneficial,harmful or neutral to the interacting individuals.
In the light of the above two statements,choose the correct option.

Which of the following is most appropriately defined?