Porifera

General Characteristics of Phylum Porifera

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General Characteristics of Phylum Porifera

General Characteristics of Phylum Porifera Some of the characteristics are: Porifera are all aquatic, mostly marine except one family Spongillidae which lives in freshwater. They are sessile and sedentary and grow like plants. The body shape is vase or cylinder-like, asymmetrical or radially symmetrical. The body surface is perforated by numerous pores, the Ostia through … Read more General Characteristics of Phylum Porifera

Characteristics of Invertebrates

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Characteristics of Invertebrates

Characteristics of Invertebrates Habitat They are found in seas, fresh water, air, land from snow to desert. 80% are found in terrestrial habitat. Most successful invertebrates of the lands are Arthropods. Protozoans are free-living, parasites or commensals. Sponges and Coelenterates are aquatic animals. Numerical Strength Among 1.25 million animal species, 95% (1.2 million) are invertebrates. … Read more Characteristics of Invertebrates