Which fruit type demonstrates parthenocarpy while retaining a persistent calyx?

In which of the following, parthenocarpy makes no sense?

A composite fruit developing from a hollow, fleshy inflorescence axis is known as a:

What is the fruit that develops from a tricarpellary, syncarpous, inferior ovary with parietal placentation?

A unique characteristic of the pomes like apple and pear is the fleshy edible part developing from:

What is the evolutionary advantage of parthenogenesis in some plant species?