Question

In Catharanthus ($=$ Vinca) anthers occur near the mouth of corolla tube. Self pollination is performed by.

• A. Growth of style
• B. Bending of filaments
• C. Shedding of pollen and falling on the low lying stigma
• D. Entry of insect

Answer 1

The correct option is A Growth of style

The anthers and stigmas of chasmogamous or the open flowers are brought together by the growth, bending as well as by folding. In Catharanthus, the growth of style brings the stigma in contact of ripe anthers present on the mouth of corolla tube When cross-pollination fails in Sunflower, the bifid bent style stigma curls back so as to pick the pollen sticking to the surface of style. It is a fail-safe mechanism of self-pollination.

So the correct option is A.