Parenchymatous is

Options

A. Photosynthesis
B. Storage of food materials
C. Secretion and excretion
D. All of the above

Answer

### Step-by-Step Solution:

1. **Understanding Parenchyma Cells**:
- Parenchyma cells are a type of simple permanent tissue found in plants. They are characterized by their living, undifferentiated nature and are non-vascular.

2. **Role in Ground Tissue**:
- Parenchyma cells constitute a major part of the ground tissue in plants. Ground tissue is responsible for various functions including storage, photosynthesis, and support.

3. **Functions of Parenchyma Cells**:
- **Photosynthesis**:
- Parenchyma cells in leaves are involved in photosynthesis. They contain chloroplasts, which allow them to capture light energy and convert it into chemical energy.
- **Storage of Food**:
- These cells also play a crucial role in the storage of food materials. For example, they make up the pulp of fruits and the endosperm of seeds, both of which store nutrients.
- **Secretion and Excretion**:
- Parenchyma cells are involved in the secretion of secondary metabolites, such as gums and resins, which are important for the plant's defense and other functions.

4. **Conclusion**:
- All the statements regarding the functions of parenchyma cells (photosynthesis, storage of food, and secretion/excretion) are correct. Therefore, the answer to the question is that parenchymatous cells perform all of the above functions.