NCERT-Invertebrates -Phylum Porifera to Echinodermata Characteristics
Porifera Characteristics Porifera Characteristics Characteristic Description Phylum Porifera Common Name Sponges Environment Generally marine Symmetry Mostly asymmetrical Cell Organization Cellular level of organization Water or Canal Transport System Through minute pores (ostia) in the body wall into a central cavity (spongocoel), then out through the osculum. Helpful in feeding, respiratory exchange, and waste removal. Cell […]
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