Discuss types of coelom found in members of kingdom Animalia.
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Answer:
- Coelom is a fluid-filled cavity between the body wall and gut wall.
- It is lined by mesoderm.
On the basis of the presence or absence of coelom, animals are classified into three groups,,
namely
- coelomates
- pseudocoelomates
- acoelomates.
Coelomate animals possess coelom between the body wall and digestive tract.
✈︎ For example, annelids, molluscs, arthropods.
✰Pseudocoelomate animals have the body cavity that is not lined by mesoderm.
✰in these animals, mesoderm is scattered between ectoderm and endoderm.
✰For example, Aschelminthes.
✰In acoelomate animals, the body cavity is absent.
Ex :- Platyhelminthes.
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Acoelomate: Coelom is absent. The blastocoel is completely occupied by mesoderm. ...
Pseudocoelomate: True coelom is not present. The blastocoel is partly filled by mesodermal cells. ...
Eucoelomate: Animals that have a true coelom.
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