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Contrivance for self pollination/autogam...

Contrivance for self pollination/autogamy is

A

Homogamy

B

Bisexuality

C

Cleistogamy

D

All

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution 1. **Understanding Self-Pollination**: Self-pollination, or autogamy, is the process where pollen from the male part of a flower fertilizes the female part of the same flower or another flower on the same plant. 2. **Types of Self-Pollination**: There are two main types of self-pollination: - **Autogamy**: Pollen transfer occurs within the same flower. - **Geitonogamy**: Pollen transfer occurs between different flowers of the same plant. 3. **Contrivances for Autogamy**: Several adaptations or contrivances help facilitate self-pollination: - **Bisexual Flowers**: Flowers must have both male (stamens) and female (pistils) reproductive organs. - **Homogamy**: This means that the male and female reproductive organs mature at the same time, allowing for effective self-pollination. - **Closed Flowers**: Flowers that remain closed can promote self-pollination by preventing pollen from being dispersed to other plants. - **Bud Pollination**: Pollination can also occur when flowers are still in bud form, which helps in self-pollination. 4. **Evaluating the Options**: The question provides four options: - 1. Homogamy - 2. Bisexuality - 3. Calistogamy (a type of self-pollination where flowers remain closed) - 4. All of the above 5. **Conclusion**: Since all the mentioned factors (homogamy, bisexuality, and calistogamy) contribute to self-pollination, the correct answer is option 4: all of these.
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