Pith is a central part of the ground tissue generally made up of
(a) Collenchyma
(b) Parenchyma
(c) Chlorenchyma
(d) Sclerenchyma

Options

A. Collenchyma
B. Parenchyma
C. Chlorenchyma
D. Sclerenchyma

Answer

To solve the question regarding the composition of pith in the ground tissue of flowering plants, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pith**:
- Pith is the central part of the ground tissue in stems and is primarily responsible for storage and transport of nutrients.

2. **Identifying Ground Tissue Types**:
- Ground tissue in plants is made up of three main types of cells: parenchyma, collenchyma, and sclerenchyma.
- Parenchyma cells are generally involved in storage and can also participate in photosynthesis if they contain chloroplasts (in the case of chlorenchyma).

3. **Analyzing the Options**:
- (a) Collenchyma: These cells provide support and are typically found in young stems and leaves, not in the pith.
- (b) Parenchyma: These are the most common type of ground tissue cells and are known for their role in storage and transport. They are usually round and have large intercellular spaces.
- (c) Chlorenchyma: This is a type of parenchyma that contains chloroplasts and is involved in photosynthesis, but it is not the main component of pith.
- (d) Sclerenchyma: These cells are thick-walled and provide structural support, but they do not make up the pith.

4. **Conclusion**:
- Based on the characteristics of pith and the types of ground tissue, we can conclude that pith is primarily made up of parenchyma cells. Therefore, the correct answer is (b) Parenchyma.

### Final Answer:
(b) Parenchyma