What is a tropism?
Growth of plants towards or away from a response
Growth of plants towards or away from a stimulus
Growth of plants towards or away from an effector
Which of these is an example of positive phototropism?
Plant shoots growing towards light
Plant roots growing away from light
Plant shoots growing away from light
What is the effect of auxin accumulating on the shady side of a plant shoot?
No effect on the plant
Plant grows away from the light
Plant grows towards the light
What is the function of the plant hormone ethene?
To cause fruits to grow
To cause flowers to grow
To cause fruits to ripen
When will seeds germinate?
When there is enough water and gibberellins are produced
When there is a lack of water and gibberellins are produced
When there is enough water and auxins are produced
How do roots grow towards the stimulus of gravity?
Auxin accumulates at the bottom of the horizontal root and promotes growth
Auxin accumulates on the bottom of the horizontal root and inhibits growth
Auxin accumulates on the top side of the horizontal root and promotes growth
When a shoot has its tip cut off, why does the shoot NOT grow towards the light?
There is no auxin being made
There is too much auxin being made
There is no ethene being made
Why do shoots grow towards light?
Plants need light for respiration
Plants need light for translocation
Plants need light for photosynthesis
What is bolting, caused by the gibberellin hormones? - Higher
Production of leaves in an attempt to reproduce before death
Production of flowers in an attempt to reproduce before death
Production of fruits in an attempt to reproduce before death
Which hormone is added to root powder in order to make plant cuttings grow roots? - Higher
Auxin
Ethene
Gibberellins