A)
Animal Morphological feature Scorpion, spider cockroach Ventral solid central
B)
Animal Morphological feature Cockroach, locust taneia Metameric segmentation
C)
Animal Morphological feature Liver fluke sea anymone Bilateral symmetry
D)
Animal Morphological feature Centipede, prawn sea urchin Jointed appendages
E)
Animal Morphological feature Hook worm, spider Central nerous system
Correct Answer: A
Solution :
Scorpion, spider and cockroach belong to phylum- Arthropoda and are invertebrates. They possess ventral solid central nervous system which consist of a dorsal brain connected with a nerve ring to a double ventral nerve cord.
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