Gibbane ring skeleton in structure and production of hydrolytic enzymes in barley endosperm is a characteristic of

Options

A. Cytokinin
B. Auxins
C. Gibberellins
D. Ethylene

Answer

To solve the question regarding the gibbane ring skeleton in structure and the production of hydrolytic enzymes in barley endosperm, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Key Terms**: The question mentions "gibbane ring skeleton," "hydrolytic enzymes," and "barley endosperm." Recognizing these terms is crucial for understanding the context.

2. **Understand the Gibbane Ring Structure**: The gibbane ring is a specific chemical structure found in certain plant hormones. It is characteristic of gibberellins, which are a group of plant hormones.

3. **Function of Gibberellins**: Gibberellins are known for their role in promoting growth. They specifically promote cell elongation and internodal elongation, which contributes to the overall height of the plant.

4. **Production of Hydrolytic Enzymes**: In the context of barley endosperm, gibberellins stimulate the production of hydrolytic enzymes. These enzymes are crucial for breaking down stored starches into sugars during seed germination, providing energy for the growing plant.

5. **Conclusion**: Based on the characteristics mentioned in the question and the functions of gibberellins, we can conclude that the hormone responsible for the gibbane ring skeleton structure and the production of hydrolytic enzymes in barley endosperm is **Gibberellins**.

### Final Answer:
The characteristic of the gibbane ring skeleton in structure and the production of hydrolytic enzymes in barley endosperm is attributed to **Gibberellins**.

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