Plant Reponses Weak Areas Flashcards
1
Q
Describe how a hormone can control the time in which a plant begins to grow
A
Gibberellins promote seed germination
By activating genes for Amy,asbestos
Starch is converted to glucose by hydrolysis
Food stores
2
Q
The herbicide antrazine works by disabling one of the proton pumps in PS2. Explain how antrazine would kill a susceptible plant
A
Reduced proton pumping
Means that photophosphorylation stops
Less ATP is produced
Less NADPH produced
No Calvin cycle
No TP made
No respiratory substrate produced so respiration stops
3
Q
Explain why gibberellin is described as a plant hormone
A
It is a chemical messenger
Produced in one part of the plant but has an effect in another place
Affects the activity of target tissue
Long lasting
Widespread effect
