Question

Compare Schizocoelom with enterocoelom.

Answer 1

Coelom:

1. The coelom is the fluid-filled body cavity present between the alimentary canal and the body wall.
2. Coelom is classified into two types: Schizocoelom and Enterocoelom.

Schizocoelom:

1. It is generally found in protostomes.
2. The body cavity or coelom originates from the splitting of mesoderm.
3. One part attaches to ectoderm and the other around the endoderm.
4. The space between them develops into the coelom.
5. The blastopore forms mouth.
6. Examples of schizocoelous animals – Arthropoda and Annelida.

Enterocoelom:

1. It is present in the deuterostomes.
2. The coelom is formed from the fusion of the internal outgrowths of the archenteron, that pinches off and fuses together to form coelom lined by mesoderm.
3. Examples of Enterocoelom animals – Chordates and Echinodermata.

Differences between Schizocoelom and enterocoelom

Schizocoelom	Enterocoelom
1. It is found in the protostomes.	1. Deuterostomes contain this coelom.
2. The splitting of mesoderm results in the formation of this type of coelom.	2. The internal protrusions of the archenteron that pinch off and fuse together to form the coelom, which is lined by mesoderm, are what give rise to it.
3. The coelom forms in the void between the ectoderm and endoderm.	3. Chordates and Echinodermata are two examples of enterocoelomic animals.
4. Arthropoda and annelids are two examples of schizocoelous animals.