Which one of the following is a matching pair of a body feature and the animal possessing it?

Options

A. Ventral central nervous system - Leech
B. Pharyngeal gill slits absent in embryo- Chameleon
C. Ventral heart - Scorpion
D. Post-anal tail - Octopus

Answer

A

Explanation

Leech possesses a ventral central nervous system. Scorpion has a dorsal heart. Phyrygeal gill slits and post-anal tail are characteristic features of chordates. Chameleon is a chordate, so it possesses pharyngeal gill-slits in embryonic stage. Octopus is a non-chordate.