Question

Distinguish between diploblastic and triploblastic with exampl..​

Answer 1

Answer:

Diploblastic means organisms have only two germ layers of cells- ectoderm and endoderm

Ex.Hydra

Triploblastic means organisms have three germ layers of cells- ectoderm, mesoderm and endoderm.

Ex.Leech

Answer 2

Answer:

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, echinoderms and choradates.