Albuminous cells of gymnosperms are equivalent to

Options

A. Sieve tubes
B. Sieve cells
C. Companion cells
D. Cork cambium

Answer

**Step-by-Step Solution:**

1. **Understanding Gymnosperms**: Gymnosperms are a group of seed-producing plants that do not form flowers or fruits. Their seeds are often exposed or "naked."

2. **Identifying Key Components**: In flowering plants (angiosperms), the phloem tissue contains sieve tubes and companion cells. These structures are essential for the transport of nutrients, particularly carbohydrates.

3. **Comparing with Gymnosperms**: Gymnosperms have a different structure. Instead of sieve tubes and companion cells, they contain sieve cells and albuminous cells.

4. **Defining Albuminous Cells**: Albuminous cells, also known as Strasburger cells, are specialized cells found in the phloem of gymnosperms. They are long, slender, and play a role in the conduction of nutrients.

5. **Conclusion**: Since albuminous cells in gymnosperms serve a similar function to companion cells in angiosperms, the correct answer to the question is that albuminous cells of gymnosperms are equivalent to companion cells.

**Final Answer**: Albuminous cells of gymnosperms are equivalent to companion cells.

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