An interconnecting membranous network of the cell composed of vesicles, flattened sacs and tubules is
" " Or
Nuclear membrane is formed around the groups of daughter chromosomes during the telophase by

Options

A. Endoplasmic reticulum
B. Golgi apparatus
C. Lysosomes
D. Microbodies

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for an interconnecting membranous network in the cell composed of vesicles, flattened sacs, and tubules. It also asks about the formation of the nuclear membrane around daughter chromosomes during telophase.

2. **Identifying the Options**: The options provided are:
- Endoplasmic reticulum
- Golgi apparatus
- Lysosome
- Microbodies

3. **Analyzing the First Part of the Question**:
- The interconnecting membranous network of the cell is primarily the **endoplasmic reticulum (ER)**. The ER consists of a network of membranes that form flattened sacs and tubules, which are interconnected and play a crucial role in the synthesis and transport of proteins and lipids.

4. **Analyzing the Second Part of the Question**:
- During **telophase**, the nuclear membrane reforms around the groups of daughter chromosomes. This process is facilitated by the endoplasmic reticulum, which helps in the reassembly of the nuclear envelope.

5. **Conclusion**: Based on the analysis, the correct answer to the question is **endoplasmic reticulum**. The endoplasmic reticulum serves both as an interconnecting membranous network and plays a role in the formation of the nuclear membrane during telophase.

### Final Answer:
The interconnecting membranous network of the cell composed of vesicles, flattened sacs, and tubules is **endoplasmic reticulum**. The nuclear membrane is formed around the groups of daughter chromosomes during telophase by the **endoplasmic reticulum**.

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