Question

In which of the following groups of animals each animal is correctly matched with its characteristic feature?

	Animals	Characteristic feature
(a)	Scorpion, spider, cockroach	Ventral solid central nervous system
(b)	Cockroach, locust, tapeworm	Metameric segmentation
(c)	Liver fluke, sea anemone, sea cucumber	Bilateral symmetry
(d)	Centipede, prawn, sea urchin	Jointed legs

• A. a
• B. b
• C. c
• D. d

Answer 1

The correct option is A a

• Tapeworm (Taenia) belongs to the phylum Platyhelminthes. Animals of the phylum Platyhelminthes do not show metamerism.
• Sea anemone belongs to the phylum Cnidaria. The animals of this phylum are radially symmetrical.
• Sea urchin belongs to the phylum Echinodermata. The animals of this phylum are not characterized by jointed appendages.
• Arthropods (Spider, Scorpion, or Cockroach) have a ventral solid nervous system.

Therefore, the correct answer is option A.