Question

Which one of the following groups of animals is
bilaterally symmetrical and triploblastic?
(a) Aschelminthes (round worms)
(b) Ctenophores
(c) Sponges
(d) Coelenterates (Cnidarians)

Answer 1

Answer:

option a that is round worms

Answer 2

The groups of animals that is  bilaterally symmetrical and triploblastic is (a) Aschelminthes (round worms).

• The Aschhelminthes group of animals, also known as the Nemathelminthes or Nematodes or Roundworms, are symmetrical and triploblastic animals, both bilateral.
• Examples of roundworms include the Ascaris (common Roundworm), Ancylostoma (common Hookworm), Wuchereria (Filarial worm), etc ..
• Coelenterata, Ctenophora belongs to the animals which are radially symmetrical and diploblastic.
• Porifera sponges and most animals are mostly asymmetric animals. Animals of aschelminthes are symmetrical and triploblastic bilateral.