Q. 24.0( 5 Votes )
How auxin helps in the bending of shoots towards a light source?
In the presence of light auxin is released or is synthesized at the tip of the shoot which helps the cells to grow. When the light comes from one side, auxin diffuse towards the shady part of the shoot. This concentration of auxin elongates the cells of the shady part of the shoot and hence it appears that the plant is bending towards the light.
Rate this question :
Following are the two examples of plant movement.
(i) Which stimulus is common for movement in both the cases?
(ii) Does the movement take place towards the point where the stimulus is received? Mention separately for both plants.
(iii) Give one reason for the movement is each case.All In One Science
A plant in the laboratory is given an increased dose of a hormone, which promotes the development of seedless fruits. Identify the hormone and write its other two functions.All In One Science
How is geotropism necessary for the plant?All In One Science
How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.Lakhmir Singh & Manjit Kaur- Biology