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Cross - pollinating plants (i) produc...

Cross - pollinating plants
(i) produce offsprings having variation among themselves .
(ii) Reduces inbreeding depression .
(iii) Results in the production of pure line homozygous offsprings.
(iv) Having bisexual flowers or have monoecious conditions.

A

(i), (ii) and (iv) are correct

B

(ii), (iii) and (iv) are correct

C

(i) and (ii) are correct

D

(ii) and (iii) are correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding cross-pollinating plants, we will analyze each statement one by one to determine which ones are correct. ### Step-by-Step Solution: 1. **Understanding Cross-Pollination**: - Cross-pollination, also known as allogamy, occurs when pollen from the stamen of one flower fertilizes the stigma of another flower of the same species. This process promotes genetic diversity. 2. **Evaluating Statement (i)**: - **Statement (i)**: "Produce offspring having variation among themselves." - **Analysis**: This statement is correct. Cross-pollination leads to the mixing of genetic material from two different plants, resulting in offspring that exhibit variations. 3. **Evaluating Statement (ii)**: - **Statement (ii)**: "Reduces inbreeding depression." - **Analysis**: This statement is also correct. Cross-pollination helps to avoid inbreeding depression, which can occur when closely related individuals breed. By mixing genes from different plants, it enhances genetic diversity and vigor. 4. **Evaluating Statement (iii)**: - **Statement (iii)**: "Results in the production of pure line homozygous offspring." - **Analysis**: This statement is incorrect. Cross-pollination typically results in heterozygous offspring, not pure line homozygous offspring. Pure lines are generally produced through self-pollination. 5. **Evaluating Statement (iv)**: - **Statement (iv)**: "Having bisexual flowers or have monoecious conditions." - **Analysis**: This statement is misleading. While some cross-pollinating plants may have bisexual flowers or be monoecious, cross-pollination can also occur in dioecious plants (where male and female flowers are on separate plants). Therefore, this statement is not universally true. ### Conclusion: - The correct statements regarding cross-pollinating plants are (i) and (ii). Therefore, the correct answer is that statements (i) and (ii) are true.
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