F. C Steward provided the phloem cells:
Correct answer: D. All of the above
- A. Sugars
- B. Vitamins
- C. Coconut milk
- D. All of the above
Explanation
Cornell botanist F.C. Steward grew a complete carrot plant from a tiny piece of phloem. He provided the cells with sugars, minerals, and vitamins, but he also added coconut milk. (Later it was discovered that coconut milk contains the plant hormone cytokinin). When the cultured cells began dividing, they produced a callus, an undifferentiated group of cells.
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