Examples of a unicellular organisms without circulatory system .
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Explanation:
The simplest animals, such as the sponges (Porifera) and rotifers (Rotifera), do not need a circulatory system because diffusion allows adequate exchange of water, nutrients, and waste, as well as dissolved gases (figure a
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Answer:
No unicellular organism has a circulatory system.
Explanation:
The circulatory system is a multicellular structure. thus it cannot exist in a unicellular organism because it does not have the machinery to make one.
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