Advertisements
Advertisements
Question
Briefly discuss any two methods by which plants avoid self-pollination.
Advertisements
Solution
The two methods to avoid self-pollination are:
- Dichogamy - In bisexual flowers, anthers and stigma mature at different times. Due to these maturation times, self-pollination is not possible.
- Prepotency - In numerous plants, pollen grains from one flower easily germinate on the stigma of another flower that is genetically distinct, as opposed to pollen grains from the same flower. This prevents self-pollination.
APPEARS IN
RELATED QUESTIONS
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
Give one word/term for the following:
Pollination of flowers by birds.
Answer the following question.
Express the process of pollination in Vallisneria.
Differentiate between geitonogamy and xenogamy (allogamy).
Write different modes of pollination in detail with suitable examples.
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.
Cleistogamous flowers are ______.
Insect pollinated flowers are ______.
When and why does a plant breeder employ the emasculation technique?
