Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Cholodny-Went theory is connected with (1) Photomorphogenesis (2) Phototropism (3) Nastic movement (4) GeotropismA) 1,2 and 3 are correct.
B) 1 and 2 are correct.
C) 2 and 4 are correct.
D) 1 and 3 are correct.
Correct Answer: C
Solution :
According to Cholodny-Went theory, there is more auxin on the lower side of both stems and roots. In stem, higher auxin concentration increases growth. Therefore stems grow more on the lower side while roots grow more on the upper side, causing the stem to bend upwardly and roots to bend downwardly. Therefore, Cholodny-Went theory is connected with phototropism and geotropism.
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