Which is least differentiated ?
(a) Simple tissues
(b) Parenchyma
(c) Circulatory tissue
(d) Complex tissues

Options

A. Simple tissues
B. Parenchyma
C. Circulatory tissue
D. Complex tissues

Answer

To determine which option is the least differentiated, let's analyze each option step by step:

1. **Understanding Simple Tissues**:
- Simple tissues are composed of a single type of cell. They can be further categorized into parenchyma, collenchyma, and sclerenchyma. Each of these has varying degrees of specialization.
- **Hint**: Simple tissues consist of one cell type, but they can still be specialized.

2. **Analyzing Parenchyma**:
- Parenchyma is a type of simple tissue that consists of thin-walled living cells. These cells are generally unspecialized and can perform various functions such as storage, photosynthesis, and tissue repair.
- **Hint**: Parenchyma cells are known for their adaptability and unspecialized nature.

3. **Considering Circulatory Tissue**:
- Circulatory tissues in plants include xylem and phloem, which are complex tissues. They are specialized for the transport of water, nutrients, and food throughout the plant.
- **Hint**: Circulatory tissues are complex and specialized for specific functions.

4. **Understanding Complex Tissues**:
- Complex tissues are made up of more than one type of cell and are specialized for specific functions. Examples include xylem and phloem, which are involved in transport.
- **Hint**: Complex tissues are more differentiated compared to simple tissues.

5. **Conclusion**:
- Among the options provided, parenchyma is the least differentiated because it consists of unspecialized cells that can adapt to various functions. Therefore, the correct answer is **(b) Parenchyma**.

**Final Answer**: (b) Parenchyma