Organelle X bears ribosomes on its outer surface. Organelle X and organelle Y together give rise to organelle Z which is often referred to as 'suicide bag' of cells
Which of the following is not a function of organelle Y?

Options

A. It helps in secretion of mucus.
B. It helps in storage, modification and packaging of secretory products in the vesicles.
C. It helps during metamorphosis of frog.
D. It helps in formation of cell wall and plasma membrane.

Explanation

To solve the question, we need to identify the organelles mentioned and their functions.

### Step-by-Step Solution:

1. **Identify Organelle X**:
- Organelle X is described as having ribosomes on its outer surface. This characteristic identifies it as the **Rough Endoplasmic Reticulum (RER)**. The ribosomes give it a "rough" appearance and it is primarily involved in protein synthesis.

**Hint**: Look for organelles with ribosomes; they are typically involved in protein synthesis.

2. **Identify Organelle Y**:
- Organelle Y is mentioned to work with Organelle X to produce Organelle Z. Organelle Z is referred to as the "suicide bag" of the cell, which is a common nickname for **Lysosomes**. Organelle Y is therefore the **Golgi Apparatus**, which modifies, packages, and sorts proteins for secretion or delivery to other organelles.

**Hint**: Consider the organelle responsible for processing and packaging proteins; this is often the Golgi Apparatus.

3. **Functions of Organelle Y (Golgi Apparatus)**:
- The Golgi Apparatus has several functions:
- It helps in the secretion of mucus.
- It aids in the storage, modification, and packaging of secretory products in vesicles.
- It is involved in the transport of proteins and lipids to the plasma membrane and other organelles.

**Hint**: Recall the main roles of the Golgi Apparatus in cellular processes.

4. **Evaluate the Options**:
- The question asks which of the following is NOT a function of Organelle Y (Golgi Apparatus).
- The options provided include:
1. It helps in the secretion of mucus.
2. It helps in the storage, modification, and packaging of secretory products in vesicles.
3. It helps during the metamorphosis of frogs.
4. It helps in the formation of the cell wall and the plasma membrane.

- Among these, the option that does not relate to the functions of the Golgi Apparatus is **"It helps during the metamorphosis of frogs."** This function is not associated with the Golgi Apparatus.

**Hint**: Look for functions that are specific to certain biological processes; if it seems unrelated to cellular packaging or secretion, it might be the correct answer.

5. **Conclusion**:
- The correct answer to the question is that the function that is NOT associated with Organelle Y (Golgi Apparatus) is **"It helps during the metamorphosis of frogs."**

### Summary:
The organelle X is the Rough Endoplasmic Reticulum, organelle Y is the Golgi Apparatus, and organelle Z is the Lysosome. The function that is not associated with the Golgi Apparatus is related to the metamorphosis of frogs.