Give three major differences between chordates and non-chordates and draw a schematic sketch of a chordate showing those features.
(N/A)
The schematic sketch of a chordate showing these features is provided in the reference image.
| Chordates | Non-chordates |
|---|---|
| $(1)$ Notochord is present in at least one stage of the life cycle. | $(1)$ Notochord is absent. |
| $(2)$ Pharyngeal gill slits are present. | $(2)$ Pharyngeal gill slits are absent. |
| $(3)$ Post-anal tail is present. | $(3)$ Post-anal tail is absent. |
| $(4)$ Heart is ventrally located. | $(4)$ Heart is dorsally located (if present). |
| $(5)$ Central nervous system is dorsally located and is hollow. | $(5)$ Central nervous system is ventrally located and is solid. |
The schematic sketch of a chordate showing these features is provided in the reference image.
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