Given below is plant and two properties of it Which of these options is INCORRECT ?

Options

A. Cucumber : (a) Stem tendrils develop from axillary buds (b) The margin of thalamus grows upward enclosing the ovary parts of flower arise above the ovary
B. Rose : (a) Ovary is half inferior (b) Gynoecium is polycarpellary and apocarpous
C. Lemon , (a) Stamens are polyadelphous (b) Placenta is axial and the ovules are attached to it in a multilocular ovary
D. Castor : (a) The seed has one cotyledon (b) The seed has endosperm

Answer

To solve the question regarding the plant and its properties, we need to analyze each of the given statements about the plants and determine which one is incorrect. Here’s a step-by-step breakdown of the solution:

### Step 1: Analyze the first plant - Cucumber
- **Property 1:** Cucumber has stem tendrils derived from the axillary buds.
- This statement is **correct**. Cucumber plants are known to have tendrils that help them climb, and these tendrils arise from the axillary buds.

- **Property 2:** The margins of the thalamus grow upwards enclosing the ovary, indicating an inferior ovary.
- This statement is also **correct**. In cucumbers, the ovary is indeed enclosed by the thalamus, which is characteristic of an epigynous flower.

### Step 2: Analyze the second plant - Rose
- **Property 1:** The ovary is half inferior.
- This statement is **correct**. In roses, the ovary is positioned in such a way that it is partially enclosed by the thalamus, making it half inferior (perigynous).

- **Property 2:** The flower is polycarpillary, meaning it has multiple free carpels.
- This statement is also **correct**. Roses do have multiple carpels that are free from each other.

### Step 3: Analyze the third plant - Lemon
- **Property 1:** Stamens are polydelphous, meaning they are in multiple bundles.
- This statement is **correct**. In lemons, the stamens are indeed arranged in bundles.

- **Property 2:** The placenta is axial.
- This statement is also **correct**. Lemons have an axial placenta, which is typical for many fruits.

### Step 4: Analyze the fourth plant - Castor
- **Property 1:** The seed has only one cotyledon.
- This statement is **incorrect**. Castor is classified as a dicot, which means it has two cotyledons, not one.

- **Property 2:** The seed is endospermous.
- This statement is **correct**. Castor seeds contain endosperm, which is a common feature in many seeds.

### Conclusion
Based on the analysis, the incorrect statement is about the castor plant having only one cotyledon. Therefore, the answer to the question is:

**The incorrect option is related to Castor, which states that it has only one cotyledon.**