Plant Hormones Flashcards
What does positive tropism mean
Towards the stimulus
What is an auxin
Plant hormone produced in the step tips and roots which controls the direction of growth
What does negative tropism mean
Away from the stimulus
Phototropism meaning
Growth in response to the direction of light
Geotropism meaning
Growth in the response to the direction of gravity
Which part of the plant does positive tropism take place, direction of growth and advantage
Stem tip
Growth towards light
Maximum light for photosynthesis
Which part of the plant does negative tropism take place, direction of growth and advantage
Root tip
Growth away from light
Less chance of drying out
Which part of the plant does positive geotropism take place, direction of growth and advantage
Root tip
Towards gravity
More chance of finding moisture
Which part of the plant does negative geotropism take place, direction of growth and advantage
Stem tip
away from gravity
More chance of finding light
What happens if the tip is cut off from growing shoots
Can’t produce auxins so phototropism can’t occur/ happen
What is tropism
Growth of plant in response to stimulus
What do auxins do
Control the direction of growth in plants
