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In castor plant :...

In castor plant :

A

Autogamy is possible

B

Geitonogamy is possible

C

Both are possible

D

Both are not possible

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks about the reproductive mechanisms in the castor plant (Ricinus communis) and provides four options regarding the possibilities of autogamy and geotonogamy. 2. **Defining Autogamy**: Autogamy is a form of self-fertilization where pollen from the same flower fertilizes its ovules. This means that the transfer of pollen occurs within the same flower. 3. **Evaluating Autogamy in Castor Plant**: In the case of the castor plant, self-fertilization (autogamy) does not occur. Therefore, option A (autogamy is possible) is incorrect. 4. **Defining Geotonogamy**: Geotonogamy is another form of self-pollination, but it involves the transfer of pollen from one flower to another flower of the same plant, rather than within the same flower. 5. **Evaluating Geotonogamy in Castor Plant**: The castor plant exhibits geotonogamy, meaning that pollen transfer occurs between different flowers of the same plant. Therefore, option B (geotonogamy is possible) is correct. 6. **Conclusion**: Based on the evaluations, the correct answer is option B (geotonogamy is possible), while autogamy is not possible in the castor plant. **Final Answer**: The correct answer is option B (geotonogamy is possible). ---
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