Question

Perianth refers to
A. Nonessential floral organs
B. Essential floral organs
C. Fused stamens and carpels
D. Undifferentiated calyx and corolla

Answer 1

The transfer of the male gametes to the female ovules in a process called pollination. After pollination occurs, fertilization happens and the ovules grow into seeds within a fruit.

Complete Answer:
- The parts of the flower can be broadly classified into two- the vegetative part and the reproductive part. The vegetative part comprises mainly of the perianth. Perianth is formed by the calyx and corolla.
- Calyx is the outermost part or whorl that is made of sepals. The next whorl is a corolla that is composed of petals. Petals are brightly coloured and are the ones responsible for attracting potent pollinators.
- The reproductive part comprises the androecium and gynoecium. The androecium consists of stamens. Stamens contain two parts- a filament and anthers. Anther is the region where pollen is produced.
- Gynoecium consists of units called carpels. Carpels form the ovary which in turn form the ovules. The ovules then give rise to the egg cell.

So the correct option is D) undifferentiated calyx and corolla.

Note: Reproduction in flowers can be carried out by self -pollination, where the pollen from the anther comes in contact with the stigma of the same flower or different flower of the same plant or cross-pollination where the anther from one flower contacts the stigma of another flower of the same species.