Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?

Options

A. Pheretima-Sexual dimorphosim
B. Musca- Complete metamosphosis
C. Chamelon- Mimicry
D. Taenia - Polymorphism

Answer

To solve the question of which one of the following is a matching pair of an animal and a certain phenomenon it exhibits, we will analyze each option provided:

### Step-by-Step Solution:

1. **Option A: Ferentima and Sexual Dimorphism**
- **Analysis**: Ferentima is a genus of earthworms. While they do exhibit sexual dimorphism (the presence of distinct male and female forms), this is not a unique or defining characteristic of Ferentima specifically. Thus, this pairing is not the best match.

2. **Option B: Musca and Complete Metamorphosis**
- **Analysis**: Musca refers to the common housefly. Houseflies undergo complete metamorphosis, which includes four distinct life stages: egg, larva (maggot), pupa, and adult. This is a well-known phenomenon associated with Musca, making this pairing a strong candidate.

3. **Option C: Chameleon and Mimicry**
- **Analysis**: Chameleons are known for their ability to change color, which is primarily for camouflage rather than mimicry. Mimicry involves one species evolving to resemble another species for protection or other benefits. Therefore, this pairing is not accurate.

4. **Option D: Taenia and Polymorphism**
- **Analysis**: Taenia is a genus of parasitic flatworms (tapeworms). While some organisms exhibit polymorphism, Taenia does not specifically demonstrate this phenomenon. Hence, this pairing is incorrect.

### Conclusion:
After analyzing all the options, the correct matching pair of an animal and a certain phenomenon it exhibits is **Option B: Musca and Complete Metamorphosis**.

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