They are characterized by numerous canals and chambers that open to the outside via pores. It is possible to disassemble a sponge into a pile of individual cells and within weeks, the various cell types will aggregate into their former structure. They have aggregations of different cell types but do not have true tissues. They are the only animals that do not exhibit obvious symmetry in their body organization. Sponges are the simplest of the multicellular animals. Invertebrate Biology Laboratory Phylum Porifera Ready? Let's go and explore beneath!! Source And since I am having this laboratory exercise in our school, let me also share what I have learned from this exercise. ![]() Hello Steemians! Science blogging time! Let's have a break and explore for a little while what's under the sea.
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