Select the wrong statement

Options

A. Gymnosperm do not have antheridia
B. Cycas and ferns have multiflagellate gametes
C. Selaginella is a heterosporous non seed plant
D. Pinus tree is dioecious

Answer

To solve the question "Select the wrong statement," we need to analyze each of the provided options carefully.

### Step-by-Step Solution:

1. **Option 1: Gymnosperms do not have antheridia.**
- Gymnosperms, such as conifers, reproduce through cones rather than flowers. They do not produce antheridia, which are male reproductive structures found in some non-seed plants. Therefore, this statement is **true**.

2. **Option 2: Cycas and ferns have multiflagellate gametes.**
- Cycas (a type of gymnosperm) and ferns (a type of pteridophyte) both produce male gametes that are multiflagellate, meaning they have multiple flagella. This statement is **true**.

3. **Option 3: Selaginella is a phytosporous non-seed plant.**
- Selaginella is indeed a type of lycophyte that reproduces via spores and does not produce seeds. This statement is also **true**.

4. **Option 4: Pinus tree is dioecious.**
- The term "dioecious" refers to species where male and female reproductive structures are found on separate plants. In contrast, Pinus (a genus of conifers) has both male and female cones on the same tree, making it **monoecious**. Therefore, this statement is **false**.

### Conclusion:
The wrong statement is **Option 4: Pinus tree is dioecious.**

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