Bone like sclereids are

Options

A. Trichosclereids
B. Astrosclereids
C. Osteosclereids
D. Macrosclereids

Answer

To solve the question "Bone-like sclereids are," we need to identify the correct type of sclereids from the given options. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Understand Sclereids**: Sclereids are a type of mechanical tissue found in plants. They provide support and protection and can occur singly or in groups.

2. **Identify the Options**: The options provided are:
- Trichoclerids
- Estrus sclerids
- Osteoclerids
- Macrosclerids

3. **Analyze Each Option**:
- **Macrosclerids**: These are elongated sclereids typically found in the seed coat of legumes. They do not resemble bone, so this option is incorrect.
- **Estrus Sclerids**: These are branched, pointed, and irregularly shaped, often star-like. They also do not resemble bone, making this option incorrect.
- **Trichoclerids**: These are uncommon cells found in certain plants like olives and monstera. They do not fit the description of bone-like sclereids, so this option is also incorrect.
- **Osteoclerids**: The prefix "osteo-" means bone. Osteoclerids are indeed referred to as bone-like sclereids. They are columnar cells that are enlarged at the ends, resembling bone structure.

4. **Conclusion**: Based on the analysis, the correct answer is **Osteoclerids**, as they are the sclereids that are bone-like in structure.

### Final Answer:
**Osteoclerids** are the bone-like sclereids.