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liberstina [14]
3 years ago
11

_____ are sessile animals that have specialized cells called amoebocytes and choanocytes.

Biology
1 answer:
Artemon [7]3 years ago
7 0

Sponges are sessile animals that have specialized cells called amoebocytes and choanocytes.

Sponges (phylum Porifera) are one of the simpllest multicellular organisms (first to branch off the evolutionary tree from the common ancestor of all animals) that have bodies full of pores and channels allowing water to circulate through them. Sponges’ s structure consists of two thin layers of cells and mesohyl layer between them. They don’ t have real tissues or organ systems such as nervous, digestive or circulatory systems. Constant water flow through their openings and pores obtain food and oxygen and remove wastes.

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The question is incomplete. The complete question is as follows:

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