In a cell , digestive enzymes mostly occur in

Options

A. Ribosomes
B. Lysosomes
C. Mitochondria
D. Plastids.

Answer

**Step-by-Step Solution:**

1. **Understanding Digestive Enzymes**: Digestive enzymes are proteins that help break down food substances into smaller, absorbable components. They play a crucial role in the digestion process within cells.

2. **Identifying Locations in the Cell**: In a cell, various organelles are responsible for different functions. To determine where digestive enzymes are mostly found, we need to analyze the options provided: ribosome, lysosome, mitochondria, and plastid.

3. **Analyzing Each Option**:
- **Ribosome**: Ribosomes are the sites of protein synthesis, not the location for digestive enzymes. They are involved in translating mRNA into proteins.
- **Lysosome**: Lysosomes are membrane-bound vesicles that contain hydrolytic enzymes, which are responsible for breaking down waste materials and cellular debris. They are often referred to as the "suicidal bag" of the cell because they can digest worn-out organelles and apoptotic cells.
- **Mitochondria**: Mitochondria are known as the powerhouse of the cell, primarily involved in energy production (ATP synthesis) rather than digestion.
- **Plastid**: Plastids, such as chloroplasts, are involved in photosynthesis and storage of substances, but they do not contain digestive enzymes.

4. **Conclusion**: Based on the analysis, the organelle where digestive enzymes mostly occur is the **lysosome**.

5. **Final Answer**: The correct answer is **lysosome**.

---