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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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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