Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

Options

(a) Liver fluke, Sea anemone, Sea cucumber – Bilateral symmetry
(b) Centipede, Prawn, Sea urchin – Jointed appendages
(c) Scorpion, Spider, Cockroach – Ventral solid central nervous system
(d) Cockroach, Locust, Taenia – Metameric segmentation

Correct Answer:

Scorpion, Spider, Cockroach – Ventral solid central nervous system

Explanation:

Scorpion, spider and cockroach have ventral solid central nervous system. All three belongs phylum-Arthopoda. — Spider belong to class-Arachnida — Scorpion belong to class- Archnida — Cockroach belong to class-Insecta