Tropisms And Plants
Published on Apr 07, 2016
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Stimuli and stimulus
Stimuli is when a plant reacts to sound or touch and stimulus can either be external or internal.
Photo by Ben Andreas Harding
The first tropism is gravitropism and that is a plants response to gravity it could be positive going towards gravity or negotiate going against gravity.
Photo by BlueRidgeKitties
The second tropism is chemotropism that is a plants reaction to chemicals a positive would be fertilizer and a negative would be weed killer.
Photo by Lenny Montana
The third is phototropism this is a plants reaction to light it could be natural sunlight or it could be a artificial light like a light bulb and the plants can be leaning towards the light source.
Photo by rishibando
The fourth one is thermotropism this is a plants response to tempature change if it's cold the plant might die if it's warm it will survive if it gets water.
Photo by jetsandzeppelins
The fifth tropism is hydrotropism it is a plants reaction to water if it doesn't get water it will die but don't give it to much water.
Photo by MightyBoyBrian
The last tropism is thigmotropism it is when vines of a plant are growing towards a stationary object like a wall.
Photo by pfarrell95
