What are '$X$' and '$Y$' in the given figure?

Epiphytes are plants which are dependent on other plants:

Identify the following analogy-based questions:
$(i)$ In Yeast and Hydra : Budding :: In Planaria : .....
$(ii)$ Method of naming : Nomenclature :: Organism associated with naming : .....

Match Column-$I$ (Scientist) with Column-$II$ (Contribution) and select the correct option:

Column-$I$ (Scientist)	Column-$II$ (Contribution)
$(a)$ Carolus Linnaeus	$(i)$ New Systematics
$(b)$ Julian Huxley	$(ii)$ Five Kingdom Classification
$(c)$ Whittaker	$(iii)$ Plant Classification Systems
$(d)$ Bentham and Hooker	$(iv)$ Binomial Nomenclature

Which of the following is not a significance of scientific nomenclature?

The study of which of the following can be used for the conservation of endangered and extinct organisms?