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Schizocoelous pattern – Coelom
There are two patterns of coelom formation in animals schizocoelous and enterocoelous. In schizocoelous pattern, two teloblasts cells (primordial mesodermal cells) are given out from close to the blastopore. These proliferate into a pair of teloblastic bands. At first the bands are solid but later each splits forming a cavity within.
Figure: Development of Coelom - Schizocoelous origin
This cavity enlarges to form the coelom. Such a coelom is known as schizocoel and animal characterized by body cavities of this type are designated as schizocoelomates - For example annelids arthropods and molluscs.
Class of Crustacea - Ostracoda Generally called mussel or seed-shrimps, Ostracoda include both fresh water and marine forms. The small crustaceans, computing a few mm have the
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