Bombycol,a pheromone secreated by

Options

A. cat
B. muskdeer
C. Silkmoth
D. Honey bee

Answer

**Step-by-Step Solution:**

1. **Understanding Pheromones**: Begin by defining what a pheromone is. A pheromone is a chemical substance produced and released into the environment by an animal, affecting the behavior or physiology of others of its species.

2. **Identifying Bombycol**: Recognize that Bombycol is a specific type of pheromone. It is important to know which species secretes it.

3. **Historical Context**: Note that Bombycol was first chemically characterized by the scientist Adolf Butenandt in 1959. This historical detail can help in understanding its significance in the study of pheromones.

4. **Source of Bombycol**: Determine the source of Bombycol. It is released by female silk moths (Bombyx mori) to attract male moths for mating purposes. This makes it a sex pheromone.

5. **Evaluating Options**: Now, evaluate the options provided:
- **Cat**: While cats do secrete pheromones, they do not produce Bombycol. They produce feline facial pheromones.
- **Musk Deer**: Musk deer secrete musk pheromones, but not Bombycol.
- **Silk Moth**: This is the correct answer, as Bombycol is specifically secreted by female silk moths.
- **Honey Bee**: Honey bees produce various pheromones, but Bombycol is not one of them.

6. **Conclusion**: Based on the evaluation, the correct answer to the question is that Bombycol is secreted by the silk moth.

**Final Answer**: Bombycol is a pheromone secreted by the silk moth.

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