Question

Which one of the following groups of 3 animals each, is correctly matched with their one characteristic morphological features?

• A. Centipede, Prawn, Sea urchin - Jointed appendages
• B. Cockroach, Locust, Taenia - Metameric segmentation
• C. Scorpion, Spider, Cockroach - Ventral solid nerve cord
• D. Liverfluke, Sea anemone, Sea cucumber - Bilateral symmetry

Answer 1

The correct option is C Scorpion, Spider, Cockroach - Ventral solid nerve cord

Scorpion, spider, cockroach all belongs to phylum Arthropoda. They have a ventral nerve cord which forms a part of the central nervous system. It usually consists of cerebral ganglia anteriorly with the nerve cords running down the ventral plane. it mainly runs below the gut and connects to the cerebral ganglia.

So, the correct answer is option C.