Which one of the following statements about Cycas is incorroct ?

Options

A. It has circinate vernation
B. Its xylem is mainly composed of xylem vessel
C. Its roots contain blue - green algae
D. It does not have a well organized female flower

Answer

To determine which statement about Cycas is incorrect, we will analyze each of the four provided statements one by one.

### Step-by-Step Solution:

1. **Statement 1: It has sarsenate vernation.**
- **Analysis:** Sarsenate vernation is a type of leaf arrangement found in ferns (Pteridophytes). Cycas, being a gymnosperm, does not exhibit sarsenate vernation. Therefore, this statement is incorrect.

2. **Statement 2: Its xylem is mainly composed of xylem vessels.**
- **Analysis:** In Cycas, the xylem primarily consists of tracheids rather than xylem vessels. This statement is also incorrect, but it is important to note that the presence of vessels is a characteristic of angiosperms, not gymnosperms like Cycas.

3. **Statement 3: Its roots contain blue-green algae.**
- **Analysis:** Cycas roots can indeed contain blue-green algae (cyanobacteria), which form a symbiotic relationship with the plant, aiding in nitrogen fixation. This statement is correct.

4. **Statement 4: It does not have a well-organized male flower.**
- **Analysis:** Cycas does not produce flowers in the traditional sense, as it is a gymnosperm. Instead, it has male cones, which are not considered well-organized flowers. This statement is correct.

### Conclusion:
The incorrect statement about Cycas is **"It has sarsenate vernation."** This type of vernation is characteristic of ferns, not gymnosperms like Cycas.