Auxin Flashcards
1
Q
Why do plants bend towards the light?
A
Auxin is in the tip of the shoot and is redistributed by light to the dark side. The auxin diffuses down the shoot on the right causing the cells to elongate
Phototropism
2
Q
What is the mica plate
A
Impermeable to auxin
3
Q
What doesn’t light do?
A
destroy auxin
4
Q
Animal vs Human hormonal control?
A
Auxin diffuses, hormones carried in the bloodstream
Both chemicals
Slower in plants
Short term effect in animals
both Transported away from site of production
Plants only affect growth
5
Q
Nervous vs Hormonal control
A
Nervous: electrical transmission, fast, short term changes, local response
Hormonal - chemical, slow, long term, widespread
