2.83: Understand that Plants Respond to Stimuli

PLANTS AND STIMULI:

• Plants are living organisms and therefore respond to change in environment (stimuli) for SurvivalE.g Abiotic Factors Such as Light, Water and and Biotic Factors such as Predators
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  Abiotic Factors: Water, light

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  Biotic Factors: Predators, Disease (Fungi and Bacteria)

• Plants respond to stimuli by producing Auxin - a growth hormone, which controls the direction of growth of roots and stems

TYPES OF STIMULI:

STIMULI	NAME OF RESPONSE
GRAVITY	Geotropism
LIGHT	Phototropism
WATER	Hydrotropism