1.3 stimuli and responses in plants Flashcards
what stimuli can be detected by plants
light, water, gravity, touch
what are the responses of plants
tropism, nastic movement
the part of plant which grows towards the stimulus is known as
positive tropism
what is phototropism
the response of plants towards light
what is hydrotropism
the response of plants towards water
what is the response of plants towards gravity
geotropism
what happens if the plants shows positive geotropism
the roots grows downwards
tendrils and twinning stems show positive
thigmotropism
what happens in the process of positive thigmotropism
the plant will cling onto whatever objects or other plants they come into contact with
what happens to the roots of thigmotropism
roots show negative thigmotropism since they avoid any objects that obstructs their search for water
what is a nastic movement
nastic movement is a response towards a stimulussuch as touch but does not depend on the direction of thes stimulus
