The network of tiny tubular structures scattered in the cytoplasm is called:-

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the network of tiny tubular structures found in the cytoplasm of cells.

2. **Identifying the Structures**: Through studies using an electron microscope, scientists have identified these tiny tubular structures in the cytoplasm.

3. **Recognizing the Organelle**: In eukaryotic cells, these structures are known as the endoplasmic reticulum (ER).

4. **Types of Endoplasmic Reticulum**: The endoplasmic reticulum can be classified into two types:
- **Rough Endoplasmic Reticulum (RER)**: This type has ribosomes attached to its surface, giving it a "rough" appearance. It is primarily involved in protein synthesis.
- **Smooth Endoplasmic Reticulum (SER)**: This type lacks ribosomes and appears smooth. It is primarily involved in lipid synthesis.

5. **Conclusion**: Therefore, the network of tiny tubular structures scattered in the cytoplasm is called the endoplasmic reticulum.

**Final Answer**: The network of tiny tubular structures scattered in the cytoplasm is called the endoplasmic reticulum.

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