Albuminous cells of phloem in gymnosperms are analogous to

Options

A. Parenchyma of phloem in Dicots
B. Parenchyma of phloem in monocots
C. Companion cells of phloem in angiosperms
D. Sieve tube elements of phloem in angiosperms

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the structure that is analogous to albuminous cells of phloem in gymnosperms. We need to identify a structure that has a similar function but different origin.

2. **Defining Analogous Structures**: Analogous structures are those that perform similar functions but arise from different evolutionary origins. In this case, we are looking for a cell type in angiosperms that serves a similar purpose to albuminous cells in gymnosperms.

3. **Identifying Phloem Components**: In phloem, there are four main elements:
- Sieve tubes
- Companion cells
- Phloem parenchyma
- Phloem fibers

4. **Understanding Albuminous Cells**: In gymnosperms, albuminous cells serve a role similar to companion cells in angiosperms. They assist in the function of food conduction alongside sieve tubes.

5. **Comparing Gymnosperms and Angiosperms**: Gymnosperms have albuminous cells instead of companion cells. While both types of cells support the function of sieve tubes, they originate from different plant groups.

6. **Evaluating the Options**:
- **Option 1**: Phloem parenchyma of monocots - Incorrect, as they do not serve the same function as albuminous cells.
- **Option 2**: Companion cells of phloem in angiosperms - Correct, as they perform a similar function to albuminous cells.
- **Option 3**: Sieve tube elements of phloem in angiosperms - Incorrect, as they are not analogous to albuminous cells.
- **Option 4**: Sieve plates - Incorrect, as they are not analogous to albuminous cells.

7. **Conclusion**: The correct answer is the companion cells of phloem in angiosperms, as they are analogous to albuminous cells in gymnosperms.

**Final Answer**: Companion cells of phloem in angiosperms.

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