Before revision: 200px|Image of a monocot and dicot sprouting away from the earth, toward the sun In botany, the Cholodny–Went model, proposed in 1927 , is an early model describing tropism in emerging shoots of monocotyledons, including the tendencies for the shoot to grow towards light (phototropism) and the roots to grow downward (gravitropism).
After revision: 200px|Image of a monocot and dicot sprouting away from the earth, toward the sun In botany, the Cholodny–Went model, proposed in 1928 , is an early model describing tropism in emerging shoots of monocotyledons, including the tendencies for the shoot to grow towards light (phototropism) and the roots to grow downward (gravitropism).