Animal Kingdom Question 300

Question: Which of the following group belongs to deuterostome?

Options:

A) Annelida, Arthropoda, Mollusca

B) Echinodermata, Hemichordata, Chordata

C) Annelida, Mollusca, Chordata

D) Arthropoda, Mollusca, Echinodermata

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Deuterostomes includes echinodermata, hemichordata and chordata.

Deuterostomia is a subtaxon of the bilateria branch of the subkingdom eumetazoa, within Animalia and are distinguished from protostomes by their deuterostomic embryonic development.

In deuterostomes, the first opening (the blastopore) becomes the anus, while in protostomes, it becomes the mouth.