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

Step-by-step solution

Leech is an Annelida, and has ventral central nervous system which consists of nerve ring, and a solid, double, mid ventral nerve cord with ganglia. Chameleon is a reptile, possessing pharyngeal gill slits during its embryonic development, and are later replaced by lungs. Scorpion is an Arthropoda, having dorsal heart. Octopus, a mollusc do not possess post anal tail. It is a characteristic feature of mammals. Related Theory The arthropod nervous system consists of a dorsal brain and a ventral, ganglionated longitu