Plant Growth and Development Question 61
61. Phototropic and geotropic movements are linked to :
[1990]
(a) gibberellins
(b) enzymes
(c) auxin
(d) cytokinins
Show Answer
Answer : c
Hints & Solutions
(c) Phototropic movements are the plant responses towards light. Generally plant shoot and flower show positive phototropism while geotropism is the plant response to the gravity of earth. Generally roots are positively geotropic. All these movements are linked to Auxin.
