The invertebrate which has a closed circulatory system is:
Correct answer: C. Earthworm
- A. Flatworm
- B. Pinworm
- C. Earthworm
- D. Hookworm
Explanation
The correct answer is the earthworm. Earthworms are annelids, which are known to have a closed circulatory system where the blood is enclosed within vessels and circulates throughout the body. This system is efficient for transporting nutrients and oxygen to various body parts.
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