Animal Kingdom

• Chordates:

  • Notochord is found in embryonic stage.
  • CNS (Central nervous system) is dorsal, hollow and single.
  • Pharyngeal gill slits are present.
  • Ventral heart.
  • A post-anal part (tail) is present.

  Non-chordates:

  • Notochord is absent
  • Ventral Nervous System, solid and double
  • Pharyngeal gill slits absent
  • Dorsal heart [if present]
  • Tail is absent