Which one of the following is a matching pair of a body feature and...

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Which one of the following is a matching pair of a body feature and the animal possessing it?
\( P \)
(a) Ventral central - Leech
W. nervous system
(b) Pharyngeal gill slits - Chamaeleon absent in embryo
(c) Ventral heart
- Scorpion
(d) Post-anal tail - Octopus
(2007)
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