what is the difference between protosome and deuterstome?

 what is the difference between protosome and deuterstome?

1) In protostome: mouth develops first (pro=first stome= mouth), anus develops second

BUT

In deuterstome: mouth develops second, anus develops first

2) Protostome= are spiral cleavage and determinant (cell already assigned a role, e.g. part of the gut)

BUT

In deuterstome= radial cleavage and indeterminent --> (can become any type of cell)

3) Protostome= Coelom forms by splitting (schizocoelous)

but

in Deuterstome= coelom forms by outpocketing (entercoelous)

4) Protostome produce mosaic embryo]

but

in Deuterstome, produces normal larvae

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