How many plants given below possesses unisexual flowers ?
Cucumber , maize, papaya , castor , Cycas, date palm.

Options

A. 4
B. 5
C. 6
D. 3

Answer

To determine how many of the listed plants possess unisexual flowers, we will analyze each plant one by one.

### Step-by-Step Solution:

1. **Understanding Unisexual Flowers**:
- Unisexual flowers are those that contain either male or female reproductive organs, but not both. This means they can produce either male gametes (pollen) or female gametes (ovules), but not both in the same flower.

2. **Analyzing Each Plant**:
- **Cucumber**: Cucumber plants have both male and female flowers, but they are unisexual. Therefore, cucumber has unisexual flowers.
- **Maize**: Maize (corn) has separate male (tassels) and female (ears) flowers, making it unisexual.
- **Papaya**: Papaya plants can have male, female, or hermaphrodite flowers, but the male and female flowers are unisexual.
- **Castor**: Castor plants have separate male and female flowers, hence they possess unisexual flowers.
- **Cycas**: Cycas is a gymnosperm that produces unisexual cones, with separate male and female structures.
- **Date Palm**: Date palms also have separate male and female flowers, thus they are unisexual.

3. **Counting the Plants**:
- From the analysis, we find that all six plants listed (Cucumber, Maize, Papaya, Castor, Cycas, Date Palm) possess unisexual flowers.

4. **Conclusion**:
- Therefore, the total number of plants that possess unisexual flowers is **6**.

### Final Answer:
The answer is **6** plants.