Which cell type will perform the function of companion cells in Pinus :

Options

A. Motor cells
B. Transfusion tissue
C. Resin canal cells
D. Albuminous cells

Answer

To determine which cell type performs the function of companion cells in Pinus, we need to follow these steps:

### Step-by-Step Solution:

1. **Understand Companion Cells**: Companion cells are specialized parenchyma cells found in the phloem of flowering plants. Their primary function is to assist in the transport of nutrients and the loading and unloading of materials into the sieve tubes.

2. **Identify the Options**: The options given are:
- A) Motor cell
- B) Transfusing tissue
- C) Resin canal cells
- D) Albuminous cells

3. **Analyze the Functions of Each Option**:
- **Motor Cells**: These are not involved in the transport of nutrients in the phloem.
- **Transfusing Tissue**: This term is not commonly associated with the specific function of companion cells.
- **Resin Canal Cells**: These cells are involved in resin production and do not play a role in nutrient transport.
- **Albuminous Cells**: These cells are found in the phloem of gymnosperms like Pinus and serve a similar function to companion cells in angiosperms, aiding in the loading and unloading of materials in the sieve tubes.

4. **Select the Correct Answer**: Based on the analysis, the correct answer is **D) Albuminous cells**. These cells perform the function of companion cells in Pinus.

### Final Answer:
The cell type that performs the function of companion cells in Pinus is **Albuminous cells**.