1
Question
Self-incompatibility prevents pollen tube formation by pollen grains on the stigma of __________.
I. same flower
II. other flowers of the same plant
III. any plant in the same division
Self-incompatibility prevents pollen tube formation by pollen grains on the stigma of __________.
I. same flower
II. other flowers of the same plant
III. any plant in the same division
Open in App
Solution
The correct option is C I and II
Self-incompatibility is a genetic mechanism that prevents inbreeding.
In self-incompatibility, the pollen grains from the same flower or different flowers of the same plant are considered incompatible by the stigma. The self pollen is considered incompatible by the flower.
Hence the pollen grains fail to germinate and there is no pollen tube formation.
This phenomenon is known as self-incompatibility which prevents the self-pollen from fertilising the ovules and thereby self-pollination is prevented.
Self-incompatibility is a genetic mechanism that prevents inbreeding.
In self-incompatibility, the pollen grains from the same flower or different flowers of the same plant are considered incompatible by the stigma. The self pollen is considered incompatible by the flower.
Hence the pollen grains fail to germinate and there is no pollen tube formation.
This phenomenon is known as self-incompatibility which prevents the self-pollen from fertilising the ovules and thereby self-pollination is prevented.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
