what are monoblastic, diploblastic and triplo blastic organisms?
Answers
Answered by
1
Diploblastic:
1. Body wall develops from two embryonic germ layers- ectoderm and endoderms and persists as such in adult.
2. Non- cellular, gelatinous mesogloea is present in between ectoderm and endoderm.
3. Coelom is absent, e.g. Hydra (coelenterates), sponges (Porifera).
Triploblastic:
1. Body develops from 3 germ layers- ectoderm,mesoderm and endoderms.
2. Mesogloea is absent and mesoderm is present.
3. Coelom is present, e.g. platy-helminthes, annelids, arthropods, mollusks, echinodermsand choradates.
1. Body wall develops from two embryonic germ layers- ectoderm and endoderms and persists as such in adult.
2. Non- cellular, gelatinous mesogloea is present in between ectoderm and endoderm.
3. Coelom is absent, e.g. Hydra (coelenterates), sponges (Porifera).
Triploblastic:
1. Body develops from 3 germ layers- ectoderm,mesoderm and endoderms.
2. Mesogloea is absent and mesoderm is present.
3. Coelom is present, e.g. platy-helminthes, annelids, arthropods, mollusks, echinodermsand choradates.
Answered by
1
Classification of animals can be made on the basis of the number of germ layers:
Animals that have two prominent germ/embryonic layers- Ectoderm( external layer) and Endoderm( internal layer)and one indifferentiated layer in between the two layers are called Diploblastic animals.
Example: Coelenterates.
Animals that have all the three germ layers present in them- Ectoderm, Mesoderm( middle layer) and Endoderm are called Triploblastic animals.
Example: Platyhelminthes.
Monoblasts are cells that are present in bone marrow and mature into monocytes and ultimately to macrophages.
Similar questions