which of the following is not the function of tepetum ?

Options

A. Secretion of Enzyme & Hormone
B. Formation of ubisch's body
C. Release of pollen
D. Secretion of pollen kit substance

Answer

To solve the question about the functions of the tapetum, we need to analyze the functions associated with it and identify which one does not belong.

### Step-by-Step Solution:

1. **Understanding Tapetum**:
- Tapetum is a layer of cells in the anther of flowering plants. It plays a crucial role in the development of pollen grains.

2. **Functions of Tapetum**:
- **Nourishment of Pollen Grains**: The tapetum provides nutrients to developing pollen grains, which is one of its primary functions.
- **Secretion of Substances**: The tapetum secretes substances that contribute to the formation of the pollen wall, including pollen kit substances that help in the stickiness of pollen grains.
- **Hormonal Functions**: While the tapetum does not directly secrete hormones like auxins, it is involved in the overall growth and development processes of the plant.

3. **Identifying the Incorrect Function**:
- **Secretion of Enzymes and Hormones**: This function is not typically associated with the tapetum. While hormones like auxins are important for plant growth, they are not secreted by the tapetum itself.
- **Formation of Ewe's Body**: This is related to the tapetum's role in pollen development.
- **Release of Pollen**: The tapetum does not directly cause the release of pollen grains; this is primarily a function of the anther's structure and mechanics.
- **Secretion of Pollen Kit Substances**: This is a recognized function of the tapetum.

4. **Conclusion**:
- The function that is **not** associated with the tapetum is the **secretion of enzymes and hormones**.

### Final Answer:
The function that is not associated with the tapetum is the **secretion of enzymes and hormones**.

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