General Characteristics of Phylum Porifera

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

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