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| any organism that derives its energy for food synthesis from light and is capable of using carbon dioxide as its principal source of carbon |
| a sudden departure from the parent type an heritable characteristic caused by a change in a gene or a chromosome |
columella col·u·mel·la (kŏl'yə-měl'ə, kŏl'ə-) or col·um·nel·la (kŏl'əm-něl'ə)
n. pl. col·u·mel·lae (-měl'ē) or col·um·nel·lae (-něl'ē)
A column-shaped anatomical structure.