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Question
Body skeleton of sponges are made of
Body skeleton of sponges are made of
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Solution
The correct option is A spicules
Sponges belongs to phylum Porifera. Their body is supported by a skeleton made up of spicules or spongin fibres. Phylum Porifera exhibits characteristic body structure made of a loose aggregate of cells, internal cavities canals lined with food filtering flagellated cells, called the choanocytes. These are also called the collar cells and are a characteristic feature of this phylum.
Ostia are small pores or openings found on the surface of the sponges.
Spongocoel is the large central cavity present in the body of sponges.
Sponges belongs to phylum Porifera. Their body is supported by a skeleton made up of spicules or spongin fibres. Phylum Porifera exhibits characteristic body structure made of a loose aggregate of cells, internal cavities canals lined with food filtering flagellated cells, called the choanocytes. These are also called the collar cells and are a characteristic feature of this phylum.
Ostia are small pores or openings found on the surface of the sponges.
Spongocoel is the large central cavity present in the body of sponges.
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