Which of the following pair is correct ?

Options

A. Bakane – Darwin
B. Cousins – Ethylene
C. Skoog – GA
D. Kurosawa – ABA

Answer

To determine which of the pairs related to plant hormones and their discoverers is correct, we can analyze each pair provided in the question.

### Step-by-Step Solution:

1. **Identify the First Pair: Back and Darwin**
- Back and Darwin are associated with phototropism, which refers to plant growth in response to light. However, Darwin's work primarily focused on the phenomenon of phototropism rather than a specific hormone.
- **Conclusion:** This pair is incorrect.

2. **Identify the Second Pair: Cousins and Ethylene**
- Cousins is credited with discovering ethylene as a gaseous plant hormone. Ethylene is known to play a significant role in the ripening of fruits and can inhibit growth.
- **Conclusion:** This pair is correct.

3. **Identify the Third Pair: Scuba and Gibberellic Acid**
- Scuba (likely referring to G. S. Scuba) is known for his work on gibberellic acid, but it is important to note that he studied its effects rather than discovering it. The discovery of gibberellic acid is attributed to other researchers.
- **Conclusion:** This pair is incorrect.

4. **Identify the Fourth Pair: Kurosawa and Gibberellic Acid**
- Kurosawa is associated with the discovery of gibberellic acid. However, the context in which he studied it is important. He is more known for his work on other hormones, not specifically gibberellic acid.
- **Conclusion:** This pair is incorrect.

### Final Answer:
The only correct pair from the options provided is **Cousins and Ethylene**.