Phototropic curvature is the result of uneven distribution of :
Correct answer: D. Auxin
- A. Gibberellin
- B. Phytochrome
- C. Cytokinins
- D. Auxin
Explanation
Phototropic curvature is the result of uneven distribution of auxin. Charles Darwin and his son Francis Darwin observed that the coleoptiles of canary grass responded to unilateral illmination by growing towards the light source (phototropism). After a series of experiments, it was concluded that the tip of coleoptile contain auxin that caused the bending of the entire coleoptile in relation to the direction of light.
Last updated
Related questions
A bean seed contains all of the following EXCEPT:
A chemical believed to be involved in flowering is :
A few normal seedlings of tomato were kept in a dark room. After a few days, they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?
A narrow layer of thin-walled cells found between the phloem/bark and wood of a dicot is:
A pigment which absorbs red and farred light is :