Question

Consider following features
(a) Organ system level of organisation
(b) Bilateral symmetry
(c) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristic's.

• A. Annelida, Arthropoda and Chordata
• B. Annelida, Arthropoda and Mollusca
• C. Arthropoda, Mollusca and Chordata
• D. Annelida, Mollusca and Chordata

Answer 1

Answer: (A)

Annelida, Arthropoda and Chordata

True segmentation is present in Annelida, Arthropoda and Chordata. They also have an organ-system level of organisation, bilateral symmetry and are true coelomates. On the other hand, molluscs have an unsegmented body.

So, the correct answer is 'Annelida, Arthropoda and Chordata'