Which of the following statement is false with respect to the application of axuins?

Options

A. Control direction of growth of plants
B. Inhibits lateral bud growth
C. Initiate and promote cell divison actively partcularly in tissue culture
D. Produce hyperelongation effect

Answer

To determine which statement is false with respect to the application of auxins, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Auxins**: Auxins are a class of plant hormones that play a crucial role in regulating plant growth and development. They are primarily involved in cell elongation, apical dominance, and the control of growth direction.

2. **Analyzing the Options**:
- **Option 1: Controlled direction of growth of plants**: This statement is true. Auxins promote cell elongation on one side of the plant, allowing it to bend towards light (phototropism), thus controlling the direction of growth.

- **Option 2: Inhibits lateral bud growth**: This statement is also true. Auxins produced at the shoot tip inhibit the growth of axillary (lateral) buds, a phenomenon known as apical dominance.

- **Option 3: Initiate and promote cell division actively particularly in tissue culture**: This statement is false. While auxins are involved in various growth processes, the promotion of cell division, particularly in tissue culture, is primarily attributed to gibberellins, not auxins.

- **Option 4: Produce hyper elongation effect**: This statement is true. Auxins are known to cause hyper elongation of cells, especially in the shoot region, leading to increased growth.

3. **Identifying the False Statement**: After analyzing all the options, it is clear that the false statement is "initiate and promote cell division actively particularly in tissue culture," as this role is primarily performed by gibberellic acid.

### Conclusion:
The false statement with respect to the application of auxins is: **"Initiate and promote cell division actively particularly in tissue culture."**

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