Question

Which one is (a) Diploblastic (b) Triploblastic?

Hydra, Centipede (Scolopendra), Liver fluke (Fasciola), Earthworm (Pheretima posthuma)

• A. Diploblastic - Hydra, Centipede (Scolopendra); Triploblastic - Liver fluke (Fasciola), Earthworm (Pheretima posthuma)
• B. Diploblastic - Liver fluke (Fasciola), Centipede (Scolopendra), Earthworm (Pheretima posthuma); Triploblastic - Hydra
• C. Diploblastic - Hydra; Triploblastic - Liver fluke (Fasciola), Centipede (Scolopendra), Earthworm (Pheretima posthuma)
• D. Diploblastic - Hydra, Earthworm (Pheretima posthuma); Triploblastic - Liver fluke (Fasciola), Centipede (Scolopendra)

Answer 1

The correct option is C Diploblastic - Hydra; Triploblastic - Liver fluke (Fasciola), Centipede (Scolopendra), Earthworm (Pheretima posthuma)

• Diploblasty is a condition of the blastula in which there are two primary germ layers: the ectoderm and endoderm. Diploblastic organisms are organisms that develop from such a blastula and include cnidaria and Ctenophora, formerly grouped together in the phylum Coelenterata, but later understanding of their differences resulted in their being placed in separate phyla. Eg. Hydra.
• Triploblasty is a condition of the blastula in which there are three primary germ layers: the ectoderm, mesoderm, and endoderm. Examples: Liver fluke, Centipede, Earthworm, etc.