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 characteristics.

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

Answer 1

The correct option is B Annelida, Arthropoda and Chordata


Animals belonging to the phylum Annelida, Arthropoda, Mollusca and Chordata exhibit organ system level of organisation with bilateral symmetry and true coelom.

Members of Annelida, Arthropoda and Chordata exhibit segmentation, however, molluscs are unsegmented animals.