Advertisements
Advertisements
Question
What is the difference between thigmotropism and thigmonasty? Name one plant which exhibits thigmotropism and one plant which exhibits thigmonasty. What behaviour (or responses) of these plants make you think that they exhibit thigmotropism and thigmonasty respectively?
Solution
| Thigmotropism | Thigmonasty |
| It is a directional movement of plant parts in response to touch. | It is a non-directional movement of plant parts in response to touch. |
| Example: Bitter gourd | Example: Mimosa pudica |
Bitter gourd exhibits thigmotropism as its tendrils show directional movement towards the things they happen to touch.
On the other hand, Mimosa pudica exhibits thigmonasty as its leaflets show non-directional movement in response to touch.
APPEARS IN
RELATED QUESTIONS
Plant parts show two types of movements, one dependent on growth and other independent of growth Give one example which depends on growth
To which directional stimuli do roots respond?
A plant's response to gravity is called ______.
The root of a plant grows downward. This is known as ______.
Name the plant organ which is positively phototropic.
Name the plant organ which is positively geotropic
The growth movement of a plant part in response to the touch of an object is called :
(a) thigmonasty
(b) hydrotropism
(c) thigmotropism
(d) geotropism
In tropic movements, plant parts move
Plants exchange gases ______ continuously through these stomata.
Name the stimulus which causes the following movement in plant:
Geotropism
