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Types of plant responses :sunflower: (Nastic response :potable_water: …
Types of plant responses
:sunflower:
tropism
:wilted_flower:
Gravitropism :arrow_up_down:
Negative
Upward growth
Positive
Downward growth
It is a plant growth response to gravity. Roots generally show a positive gravitropism. The downward growth of roots into soil helps to anchor the plant and brings roots in contact with water and minerals
thigmotropism
:leaves:
is a growth response to mechanical stimuli, such as contact with an object, another organism, or even wind
twist around a nearb tree
phototropism :bulb:
plant growth response to light caused by an unequal distribution of auxin.
Nastic response
:potable_water: :four_leaf_clover:
- Def:-It is a plant response that causes movement that is not dependent on the direction of the stimulus
- It is reversible, and can be repeated.
- Ex:- A plant leaf opening its leaf in the morning ,and closing
them at night
- Nastic responses are mainly caused by a change in water pressure
- Image
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