Typically , gymnosperms lack

Options

A. Xylem vessels but sieve tubes are present
B. Tracheids and sieve tubes but companion cells are present
C. Vessels , sieve tubes and companion cells
D. Tracheids and companion cells

Answer

To solve the question "Typically, gymnosperms lack," we need to analyze the options provided and identify what is typically absent in gymnosperms.

### Step-by-Step Solution:

1. **Understand Gymnosperms**: Gymnosperms are a group of seed-producing plants that include conifers, cycads, Ginkgo, and gnetophytes. They are characterized by having seeds that are not enclosed in an ovary (unlike angiosperms).

2. **Examine the Options**:
- **Option 1**: "Xylem vessels are lacking but sieve tubes are present."
- **Analysis**: Gymnosperms do lack xylem vessels, but they do not have sieve tubes. Sieve tubes are characteristic of angiosperms. Therefore, this option is incorrect.

- **Option 2**: "Tracheates and sieve tubes are lacking but companion cells are present."
- **Analysis**: Gymnosperms do lack sieve tubes and companion cells. Companion cells are also absent in gymnosperms. Thus, this option is incorrect.

- **Option 3**: "Gymnosperms lack vessels, sieve tubes, and companion cells."
- **Analysis**: This statement is correct. Gymnosperms have tracheids instead of vessels and lack sieve tubes and companion cells. Therefore, this option is correct.

- **Option 4**: "Tracheids and companion cells."
- **Analysis**: Tracheids are present in gymnosperms, but companion cells are absent. Hence, this option is incorrect.

3. **Conclusion**: The only correct option is Option 3, which states that gymnosperms lack vessels, sieve tubes, and companion cells.

### Final Answer:
Typically, gymnosperms lack vessels, sieve tubes, and companion cells.

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