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25 June, 20:44

Which of these is NOT characteristic of chordates?

a dorsal supporting rod

a dorsal hollow nerve cord

pharyngeal pouches

chloroplasts in their cells

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  1. 25 June, 21:40
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    The option which is not a characteristic of chordates is chloroplasts in their cells.

    Chordates do have a dorsal supporting rod (vertebrates are types of chordates - they have a spine), a dorsal hollow nerve cord (within the spine), and pharyngeal pouches. However, they do not have chloroplasts, because that is a characteristic of photoautothropic eukaryotes, which chordates certainly are not.
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