Polyfera contains animals with pores, usually called sponges. They are non-motile multicellular organisms whose bodies are full of pores and channels. the sponge contains non-specialized cells that can change to other types. 28th day. 2017 г.
Are the sponge and polyfera the same?
Sponges make up the phylum Sponge, cnidarians, unstalked metazoans (multicellular) with water intakes and outlet openings connected by chambers lined with cells such as cnidaria and flagella. It is defined as an immovable animal).
What are the main differences between sponges and cnidaria?
Cnidaria and sponges are two different phyla. Cnidaria have cnidaria, but sponges do not. Cnidaria have a well-organized organ system, but sponges do not. Sponges, on the other hand, have an efficient tunneling system composed of pores, but cnidaria do not.
Why are sponges called sponges?
The name porifera means "pore bearer" in Latin (pores are small holes). The body of the sponge is covered with 1 cell thick skin. This skin has many small pores and some large openings. .. These collar cells pump water throughout the sponge and filter the food that the sponge cells eat.
What are the main features of Polyfera Sponge?
Characteristics of the sponge phylum They are generally marine aquatic organisms and there are several freshwater species. Their bodies are asymmetric. The body shape can be cylindrical, vase-like, round, or sac-like. They are ectoderm animals with two layers, the outer dermis and the invaginated archenteron.
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