what is mollusca and its characteristics
Answers
Answer:
Mollusca is a phylum in kingdom Animalia which consists of many characteristics as follows-
1) They are soft bodied organism.
2) They have a special organ named radula which is file like rasping or cutting organ with chitinous teeth which are used to cut aquatic grass .
3) They have a sensory organ osphradium to detect chemical nature of water and food .
4) Their body is covered by calcareous exoskeleton.
5) After arthropoda this phylum is the 2nd biggest phylum with around 60000 species.
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Answer:
The most general characteristics of molluscs is the they are unsegmented and bilaterally symmetrical. The following are present in all modern molluscs :The dorsal part of the body wall is a mantle Which secretes calcareous spicules ,plates or shells.
Explanation:
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