Question
Write any five differences between Chordata and Non-Chordata animals.
| Chordates | Non-Chordates |
| 1. Notochord present. | 1. Notochord absent. |
| 2. Central nervous system is dorsal, hollow and single. | 2. Central nervous system is ventral, solid and double. |
| 3. Pharynx perforated by gill slits. | 3. Gill slits are absent. |
| 4. Heart is ventral. | 4. Heart is dorsal (if present). |
| 5. A post-anal part (tail) is present | 5. Post-anal tail is absent. |
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