Plant Responses Flashcards
What is a stimulus?
A stimulus is anything that causes a reaction in an organism or in any of it’s parts
What is a response?
A response is the activity of a cell or organism as a result of a stimulus
What is a tropism?
Tropism is a change in the growth of a plant in response to an external stimulus
What is a positive tropism?
A positive tropism occurs when the growth is towards the stimulus
What is a negative tropism?
A negative tropism occurs when the growth is away from the stimulus
What is phototropism?
Phototropism is the change in growth of a plant in response to light, usually from one direction (I.e. unidirectional light)
What is geotropism?
Geotropism is the change in growth of a plant in response to gravity
What is thigmotropism?
A change in growth of a plant in response to touch
What is hydrotropism?
A change in growth of a plant in response to water
What is chemotropism?
A change in growth of a plant in response to chemicals
What is a growth regulator?
A growth regulator is a chemical that controls the growth of a plant
What is a growth promoter?
A chemical that causes increased growth in plants
What are growth inhibitors?
A growth inhibitor is a chemical that causes a reduction in growth of plants
