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Which among the following statements are...

Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Unisexual flowers possessing only stamens cannot produce fruits.

A

(i) and (iv)

B

(ii), (iii) and (iv)

C

(iii) and (iv)

D

(i), (iii) and (iv)

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statements are true for unisexual flowers, let’s analyze each statement step by step. ### Step-by-Step Solution: 1. **Understanding Unisexual Flowers**: - Unisexual flowers are those that contain either male or female reproductive structures, but not both. The male reproductive structure is called the stamen, and the female reproductive structure is called the pistil. 2. **Evaluating Statement (i)**: "They possess both stamen and pistil." - This statement is **false**. Unisexual flowers do not possess both structures; they have either stamens (male) or pistils (female), but not both. 3. **Evaluating Statement (ii)**: "They possess either stamen or pistil." - This statement is **true**. Unisexual flowers will have either the male (stamen) or the female (pistil) reproductive structure. 4. **Evaluating Statement (iii)**: "They exhibit cross pollination." - This statement is **true**. Since unisexual flowers have only one type of reproductive structure, they cannot self-pollinate. Therefore, they rely on cross-pollination, which is the transfer of pollen from one flower to another. 5. **Evaluating Statement (iv)**: "Unisexual flowers possessing only stamens cannot produce fruits." - This statement is **true**. Flowers with only stamens cannot produce fruits because they lack the pistil necessary for fertilization and fruit development. The pollen from the stamen must reach a flower with a pistil for fertilization to occur. ### Conclusion: Based on the evaluations: - Statement (i) is false. - Statements (ii), (iii), and (iv) are true. Thus, the correct answer is that statements (ii), (iii), and (iv) are true for unisexual flowers. ### Final Answer: The true statements for unisexual flowers are (ii), (iii), and (iv). ---
To determine which statements are true for unisexual flowers, let’s analyze each statement step by step. ### Step-by-Step Solution: 1. **Understanding Unisexual Flowers**: - Unisexual flowers are those that contain either male or female reproductive structures, but not both. The male reproductive structure is called the stamen, and the female reproductive structure is called the pistil. 2. **Evaluating Statement (i)**: "They possess both stamen and pistil." ...
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