Assertion (A): Unisexual flowers have separate male and female flowers whereas a typical monocot embryo comprises an embryonal axis with single cotyledon.
Reason ( R): Cucumber, pumpkin and water melon are example of unisexual flowers.

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is NOT the correct explanation of A.
C. A is true but R is false.
D. A is false and R is true.

Explanation

To solve the assertion-reason question, we will analyze both the assertion (A) and the reason (R) provided.

### Step 1: Analyze the Assertion (A)
The assertion states that "Unisexual flowers have separate male and female flowers whereas a typical monocot embryo comprises an embryonal axis with a single cotyledon."

- **Unisexual Flowers**: These are flowers that contain either male or female reproductive organs but not both. This means that male and female flowers are separate.
- **Monocot Embryo**: A typical monocot embryo indeed consists of an embryonal axis and a single cotyledon. For example, in maize (a monocot), there is one cotyledon.

**Conclusion for Assertion (A)**: The assertion is true.

### Step 2: Analyze the Reason (R)
The reason states that "Cucumber, pumpkin, and watermelon are examples of unisexual flowers."

- **Examples of Unisexual Flowers**: Cucumber, pumpkin, and watermelon are indeed examples of plants that have unisexual flowers. In these plants, you can find male and female flowers on the same plant but they are separate.

**Conclusion for Reason (R)**: The reason is also true.

### Step 3: Determine the Relationship Between A and R
Now we need to determine if the reason is a correct explanation of the assertion.

- While both the assertion and the reason are true, the reason does not explain the assertion. The assertion discusses the nature of unisexual flowers and monocot embryos, while the reason provides examples of unisexual flowers.

### Final Conclusion
Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

**Answer**: Option 2: Both assertion and reason are true, but reason is not the correct explanation of assertion.

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