4
Question
(a)What is meant by positive tropism and negative tropism? Explain with examples.
Open in App
Solution
•If the growth (or movement) of a plant part is towards the stimulus, it is called positive tropism.
•If the growth (or movement) of a plant part is away from the stimulus, then it is called negative tropism.
•The movement of roots towards the pull of gravity is an example of positive geotropism, whereas the movement of plant stem in the direction opposite to the pull of gravity is an example of negative geotropism.
•If the growth (or movement) of a plant part is towards the stimulus, it is called positive tropism.
•If the growth (or movement) of a plant part is away from the stimulus, then it is called negative tropism.
•The movement of roots towards the pull of gravity is an example of positive geotropism, whereas the movement of plant stem in the direction opposite to the pull of gravity is an example of negative geotropism.
Suggest Corrections
9
Similar questions