Name the volatile substance which was confirmed by coisins from ripened oranges.

Answer

**Step-by-Step Solution:**

1. **Identify the Scientist and Context**: The scientist involved in the discovery of the volatile substance from ripened oranges is H. H. Causins. This research dates back to 1910.

2. **Understanding the Experiment**: Causins observed that when oranges were shipped with bananas, the bananas spoiled quickly. This observation led to further investigation into the cause of the spoilage.

3. **Discovery of the Volatile Substance**: Upon investigation, it was found that the oranges released a volatile compound during the shipping process. This compound was responsible for the ripening of the bananas.

4. **Naming the Volatile Substance**: The volatile substance released by ripened oranges was identified as Ethylene.

5. **Significance of Ethylene**: Ethylene is known as a ripening hormone because it plays a crucial role in the ripening process of fruits. It also induces senescence, which is the process of aging in plants.

6. **Conclusion**: Therefore, the volatile substance confirmed by Causins from ripened oranges is Ethylene.

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