Question

The above diagram shows the germs layer. The animals having structures shown in the figures A and B are respectively called

(a) Diploblastic, Triploblastic

(b) Triploblastic, Diploblastic

(c) Diploblastic, Diploblastic

(d) Triploblastic, Triploblastic

Answer 1

(a) Diploblastic, Triploblastic

Explanation:

Diploblastic animals have two germinal layers, outer ectoderm and inner endoderm, e.g., Porifera and Coelenterate. Triploblastic animals have three germinal layers – outer ectoderm, middle mesoderm and inner endoderm, e.g., Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Molluscs, Echinodermata and Chordata.