Question

Which one of the following group of animals are triploblastic and radially
symmetrical ?
(a) Nematoda
(b) Annelida
(c) Echinodermata
d) Vertebrata​

Answer 1

Sorry to say but the above answer is wrong ..... vertebrate are triploblastic but they are not radical symmetrical

The correct answer is ' ECHINODERMATA'

Answer 2

ANSWER:

Option C – Echinodermata is the correct answer.

EXPLANATION:

• The Nematoda are triploblastic, like the majority of other animal phyla, and have an embryonic mesoderm that is located in between the ectoderm and endoderm. They are also bilaterally symmetric, which means that a longitudinal section will separate them into symmetrical right and left sides.

• The coelomate, triploblastic, bilaterally symmetric Annelid creatures are an order of invertebrates.

• Echinodermata are triploblastic and have radial body symmetry.

• All vertebrates are bilaterally symmetrical and triploblastic in nature.

Echinodermata being triploblastic and showing radial symmetry, makes option C as the correct answer.

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