The correct options are
A When a single fruit develops from a single ovary of a single flower, it is called a simple fruit.
B The ovary may belong to a monocarpellary simple gynoecium or to a polycarpellary syncarpous gynoecium.
D Fleshy fruits and dry fruits are types of simple fruits
When a single fruit develops from a single ovary of a single flower, it is called a simple fruit. The ovary may belong to a monocarpellary simple gynoecium or to a polycarpellary syncarpous gynoecium. There are two categories of simple fruits—dry and fleshy. Flowers with polycarpellary and apocarpous gynoecium give rise to a number of fruitlets as there are a number of free ovaries, each giving rise to one fruitlet. Such fruits are called aggregate fruits.