Q. Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature? Animals - Morphological feature
A) Cockroach, Locust, Taenia - Metameric segmentation
B) Liver fluke, Sea anemone, Sea cucumber - Bilateral symmetry
C) Centipede, Prawn, Sea urchin - Jointed appendages
D) Scorpion, Spider, Cockroach - Ventral solid central nervous system
Explanation
[Solution from source] Scorpion, spider and cockroach are all arthropods, and non-chordates like these have a ventral, solid nerve cord. Taenia is not metamerically segmented, sea anemone is radially symmetrical, and sea urchin (an echinoderm) has no jointed appendages, so the other groupings each contain a misfit. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.