Select an incorrect statement for gymnosperms

Options

A. Seeds are naked
B. Sequoia is one of the tallest tree species
C. Roots are generally tap roots
D. Stems are branched (Cycas) or unbranched (Pinus, Cedrus)

Answer

To select the incorrect statement regarding gymnosperms, we need to analyze each of the provided statements carefully.

1. **Understanding Gymnosperms**: Gymnosperms are a group of plants that produce naked seeds, meaning their seeds are not enclosed within an ovary wall. This is a defining characteristic of gymnosperms.

2. **Identifying the Statements**:
- **Statement 1**: "Seeds are naked."
- This statement is correct as gymnosperms do produce naked seeds.
- **Statement 2**: "Sequoia is one of the tallest tree species."
- This statement is also correct because Sequoia trees are known for their height and are indeed gymnosperms.
- **Statement 3**: "Roots are generally tap roots."
- This statement is correct as many gymnosperms, including species like Pinus, have tap roots.
- **Statement 4**: "Stems are branched in Cycas."
- This statement is incorrect. In fact, Cycas has unbranched stems, while other gymnosperms like Pinus have branched stems.

3. **Conclusion**: The incorrect statement regarding gymnosperms is: "Stems are branched in Cycas."

### Summary of Steps:
1. Understand the definition and characteristics of gymnosperms.
2. Analyze each statement provided.
3. Identify which statement does not align with the known characteristics of gymnosperms.
4. Conclude that the incorrect statement is about the branching of stems in Cycas.