Identify animals that are NOT triploblastic.

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 12 Dec 2022 Shift 2)

Answer 1

The correct answer is Coelenterates

Key Points:Triploblastic animals

Triploblastic animals create the endoderm, ectoderm, and mesoderm, the three basic germ layers.
True organs, different muscle types, bone, connective tissue, the circulatory system, the notochord, and other structures can be produced by the mesoderm.
Animal endoderm that is triploblastic includes the lungs, stomach, colon, liver, urinary bladder, etc.
Ectoderm produces the epidermis, lens of the eye, brain, spinal cord, and other tissues.
The triploblastic creatures are bilaterally symmetrical.
When compared to diploblastic animals, triploblastic animals are much more diversified.
Animals like Platyhelminthes, annelids, arthropods, mollusks, echinoderms, and chordates are examples of triploblastic organisms.

Platyhelminthes:

The flatworms, also known as Platyhelminthes, are a group of soft-bodied, generally basic bilaterian, unsegmented invertebrates.

Echinodermata:

Any member of phylum Echinodermata is an echinoderm.
The adult sea lilies, also known as the "stone lilies," brittle stars, starfish, sea urchins, sand dollars, and sea cucumbers are distinguishable by their (often five-point) radial symmetry.

Chordata:

An animal belonging to the phylum Chordata is a chordate.
Five synapomorphies, or basic physical traits, that set chordates apart from all the other taxa are present in all chordates at some point during their larval or adult stages.