Dwarfness can be controlled by treating the plant with

Options

A. cytokinin
B. gibberellic acid
C. auxin
D. antigibberellin

Answer

To answer the question "Dwarfness can be controlled by treating the plant with," we will analyze the options provided and determine which one is correct based on the information given in the video transcript.

### Step-by-Step Solution:

1. **Understanding Dwarfness in Plants**:
- Dwarfness in plants refers to the condition where plants do not grow to their full height or size. This can be due to various factors, including genetic factors or hormonal imbalances.

2. **Identifying the Options**:
- The options provided are:
- A) Cytokinin
- B) Zebralic Acid
- C) Auxin
- D) Anti-Zebralins

3. **Analyzing Each Option**:
- **Cytokinin**: This is a class of plant hormones that promote cell division and are involved in growth and differentiation. However, they do not specifically address dwarfness.
- **Zebralic Acid**: This is a plant hormone known to promote stem and root elongation, as well as inter-nodal elongation. It helps in floral development and stimulates cell elongation in the stem, which can prevent dwarfness.
- **Auxin**: Another class of plant hormones that promote cell elongation, particularly in the stem. However, it does not specifically control dwarfness.
- **Anti-Zebralins**: These are inhibitors of zebralic acid, which means they would actually promote dwarfness rather than prevent it.

4. **Conclusion**:
- Based on the analysis, the hormone that effectively controls dwarfness in plants is **Zebralic Acid**. Therefore, the correct answer is **B) Zebralic Acid**.

### Final Answer:
Dwarfness can be controlled by treating the plant with **Zebralic Acid**.

---