Examlex
Roots are involved in all EXCEPT which of the following activities?
Notochord
A flexible rod made out of a material similar to cartilage that provides support in the embryonic stages of all chordates and some adult animals.
Phylum
A major category in the classification of living organisms, ranking above class and below kingdom.
Characteristic
A distinguishing feature or quality that defines or identifies something.
Echinoderms
A phylum of marine animals that includes starfish, sea urchins, sea cucumbers, and sand dollars, characterized by radial symmetry and a unique water vascular system.
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