Question

________ is the fourth and the innermost whorl of the flower.​

Answer 1

A typical flower has four main parts—or whorls—known as the calyx, corolla, androecium, and gynoecium (Figure 1). The outermost whorl of the flower has green, leafy structures known as sepals. The sepals, collectively called the calyx, help to protect the unopened bud.

Answer 2

Gynoecium is the fourth and the innermost whorl of the flower.

It consists of(one or more) pistills and is typically surrounded by the pollen-pro ducing reproductive organs, the stemens, collectively called the androecium.

Hope it helps