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Which one of the following groups of three animals each is correctly matched

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

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