Electric organs are modified

Options

A. Nerves
B. Muscles
C. Tendon
D. Ligament

Answer

**Step-by-Step Solution:**

1. **Understanding Electric Organs:**
- Electric organs are specialized structures found in certain fish, particularly in the class Pisces, which includes both bony fish and cartilaginous fish.
- These organs are responsible for generating electric shocks, which can be used for various purposes such as hunting prey, defense, communication, and mating.

2. **Identifying the Source of Electric Organs:**
- Electric organs are primarily found in electric rays and some other species of fish.
- The question asks what these electric organs are modified from.

3. **Analyzing the Options:**
- Option A: Nerves - This is incorrect as electric organs are not derived from nerves.
- Option B: Muscles - This is correct; electric organs are modified branchial muscles.
- Option C: Tendon - This is incorrect as tendons are connective tissues and not related to electric organ formation.
- Option D: Ligament - This is also incorrect as ligaments connect bones and are not involved in the formation of electric organs.

4. **Conclusion:**
- Based on the information, electric organs in fish, such as the torpedo, are modified branchial muscles derived from pharyngeal arches.
- Therefore, the correct answer is **Option B: Muscles**.

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