plant responses Flashcards
(10 cards)
1
Q
tropism
A
change in growth of a plant in respsonse to an external stimulas
2
Q
geoptropism
A
is the change in growth of a plant in repsonse to gravity
3
Q
chemotropism
A
is the change in growth of a plant in response to chemicals
4
Q
growth regulators
A
are chemicals that control the growth of plants
5
Q
growth inhibitors
A
reduce growth of plants
6
Q
growth promotors
A
increase the growth of plants
7
Q
commercial uses of plant growth regulators
A
rooting powder - stimulate root growth
selective weedkiller - will kill dicots
ethene - cause green bananas to turn yellow
8
Q
IAA
A
family of growth regulators
9
Q
Functions of IAA
A
loosen cellulose fibres in cell walls
cause differant tissues to form
inhibit side branching in stems
10
Q
Effects of IAA
A
Tropisms
apical dominance
fruit formation
