Different Kinds Of Sponges
Sponges are mainly classified on the basis of their structure or external characteristics. For example, spicules prove to be an important feature for distinguishing between different species of sponges. Spicules are known to reinforce the mesohyl. Different types of sponges or classes formed due to the reinforcement process are described below.
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sea sponges are not plants as many people believe. They are the most primitive animals on the planet. Sponges are multi-cellular but they do not have any organs, muscles or nerves. Experts have identified over 5,000 unique sponge species, including 150 freshwater species. They do not move, and often provide homes for plants and other species. The scientific term for a sponge is “porifera.” While all porifera have commonalities, they are also organized into three distinct classes.
taken from:http://animals.pawnation.com/different-sea-sponges-1627.html
Read more at Buzzle: http://www.buzzle.com/articles/different-types-of-sponges.html
taken from:http://www.buzzle.com/articles/different-types-of-sponges.html
sea sponges are not plants as many people believe. They are the most primitive animals on the planet. Sponges are multi-cellular but they do not have any organs, muscles or nerves. Experts have identified over 5,000 unique sponge species, including 150 freshwater species. They do not move, and often provide homes for plants and other species. The scientific term for a sponge is “porifera.” While all porifera have commonalities, they are also organized into three distinct classes.
taken from:http://animals.pawnation.com/different-sea-sponges-1627.html
Sponges don't have a definite form. Their body is delicate and filled with mesohyl, a jelly-like substance. Being aquatic creatures, the sponges can absorb water, oxygen, other fluids and food with relative ease than other animals. Sponges appear more like plants however, in reality they are animals that belong to the phylum Porifera.
An interesting point to note about sponges is that they don't have a well-developed digestive system, circulatory system or nervous system. These organisms extract food from water that enters their body through pores. Since sponges need substrates (platforms/base) like rocks to remain rooted to the surface in oceans, they are also termed as sessile - sedentary creatures. There are more than 7000 species of sponges in the world and it is likely that more will be discovered in the future. The major species of sponges have the following forms: encrusting-sheets, mounds, tubes and upright-sheets.
Sponges are known to feed on bacteria. However, in few cases microbes may live inside the body of sponges as endosymbionts - an organism living in symbiosis with its host and inside its body. Some of the sponges turn carnivorous where food is scarcely available.
Read more at Buzzle: http://www.buzzle.com/articles/different-types-of-sponges.html
taken from:http://www.buzzle.com/articles/different-types-of-sponges.html
An interesting point to note about sponges is that they don't have a well-developed digestive system, circulatory system or nervous system. These organisms extract food from water that enters their body through pores. Since sponges need substrates (platforms/base) like rocks to remain rooted to the surface in oceans, they are also termed as sessile - sedentary creatures. There are more than 7000 species of sponges in the world and it is likely that more will be discovered in the future. The major species of sponges have the following forms: encrusting-sheets, mounds, tubes and upright-sheets.
Sponges are known to feed on bacteria. However, in few cases microbes may live inside the body of sponges as endosymbionts - an organism living in symbiosis with its host and inside its body. Some of the sponges turn carnivorous where food is scarcely available.
Read more at Buzzle: http://www.buzzle.com/articles/different-types-of-sponges.html
taken from:http://www.buzzle.com/articles/different-types-of-sponges.html
