Final answer:
Ergocalciferol, or vitamin D2, is derived from plant foods and is critical for calcium and phosphorus metabolism.
Explanation:
Ergocalciferol, also known as vitamin D2, is derived from plant foods and is formed by plants, mushrooms, and yeast. It is essential for regulating calcium and phosphorus metabolism in the body. Humans can obtain vitamin D2 from sources such as mushrooms that contain a high concentration of its precursor, ergosterol.
Learn more about Vitamin D2 and its sources here:
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