Parenchymatous tissue is the site of

Options

A. photosynthesis
B. storage of food materials
C. Secretion and excretion
D. all of the above

Answer

### Step-by-Step Solution:

1. **Understanding Parenchymatous Tissue**:
- Parenchymatous tissue is a type of simple tissue composed of living cells that are typically spherical, oval, or round in shape.
- These cells have thin walls made of cellulose and can divide even at maturity.

2. **Functions of Parenchymatous Tissue**:
- **Photosynthesis**:
- Parenchyma cells contain chloroplasts, which are essential for photosynthesis.
- They capture sunlight and convert it into chemical energy stored in the form of sugars.
- **Storage of Food Materials**:
- Parenchyma cells have intercellular spaces that allow them to store various substances, including water, nutrients, and food materials.
- They are particularly important in roots and stems for storing energy reserves.
- **Secretion and Excretion**:
- Parenchymatous tissue is involved in the secretion of substances like gums and tannins.
- These secretions can help prevent water loss, especially in plants that grow in dry habitats.

3. **Conclusion**:
- Given that parenchymatous tissue is involved in photosynthesis, storage of food materials, and secretion/excretion, the correct answer to the question is "all of the above".

### Final Answer:
Parenchymatous tissue is the site of photosynthesis, storage of food materials, and secretion/excretion. Therefore, the correct option is "all of the above".

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