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Assertion : All floral whorls are suppos...

Assertion : All floral whorls are supposed to be modified leaves .
Reason : Flower is considered as a modified shoot bearing floral parts on its nodes .

A

If both Assertion and Reason are true and the Rea-son is the correct explanation of the Assertion.

B

If both Assertion and Reason are true and the Rea-son is not the correct explanation of the Assertion.

C

If Assertion is true, but Reason is false.

D

If both Assertion and Reason is false.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that all floral whorls are supposed to be modified leaves. This means that the different parts of the flower (like sepals, petals, stamens, and carpels) are considered to be adaptations of leaves. 2. **Understanding the Reason**: The reason provided is that a flower is considered a modified shoot bearing floral parts on its nodes. This implies that the flower structure is similar to a shoot, with nodes where the floral parts are attached. 3. **Identifying Floral Whorls**: There are four main floral whorls: - **Calyx**: Composed of sepals. - **Corolla**: Composed of petals. - **Androecium**: Male reproductive part, consisting of stamens. - **Gynoecium**: Female reproductive part, consisting of carpels. 4. **Analyzing the Nature of the Flower**: The flower has a structure called the thalamus (or receptacle), which is the axis of the flower. This thalamus bears the floral parts and has short or suppressed internodes and nodes, indicating that it is a modified shoot. 5. **Evidence Supporting the Assertion**: - The floral parts can exhibit leaf-like characteristics. For example, sepals can have a leaf-like structure with veins and pigmentation similar to leaves. - The flower buds and shoot buds are similar in position (both can be terminal or axillary) and can sometimes interchange, further supporting the idea that flowers are modified shoots. 6. **Conclusion**: Both the assertion and the reason are true. The reason correctly explains the assertion because it provides a basis for understanding why floral whorls can be considered modified leaves. ### Final Answer: Both the assertion and the reason are true, and the reason is the correct explanation for the assertion. ---
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