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

  1. A
    Post-anal-tail - Octopus
  2. B
    Ventral Central nervous system - Leech
  3. C
    Pharyngeal gill slits absent in embryo - Chamaeleon
  4. D
    Ventral heart - Scorpion

Solution & Step-by-step Explanation

Leech (Annelida) possesses a ventral, solid, and ganglionated central nervous system, which is a characteristic of non-chordates. Octopus (Mollusca) lacks a post-anal tail. (Chordata) has gill slits during embryonic development. Scorpions have a dorsal heart.

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Which one of the following is a matching pair of a body feature and the animal possessing it?
A
Post-anal-tail - Octopus
B
Ventral Central nervous system - Leech
C
Pharyngeal gill slits absent in embryo - Chamaeleon
D
Ventral heart - Scorpion

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