Plant Signaling

Question 1

Auxin

Answer 1

important signaling molecule (hormone) in plants, produced in meristems

Question 2

location of meristem in monocots

Answer 2

base of stem

Question 3

location of meristemstem in dicots

Answer 3

tip of stem

Question 4

phototropism

Answer 4

directed movement in response to light

Question 5

what part of plant do auxin molecules flow to

Answer 5

shaded side of plant

Question 6

how does auxin affect cell walls of plant

Answer 6

auxin causes cell walls to soften on shady side which causes plant to bend towards light

Question 7

positive phototropism

Answer 7

plant moves towards light stimulus

Question 8

what effect does auxin have on shoots

Answer 8

-auxin stimulates cell growth
-cells with high concentrations of auxin will be larger
-causes plant to grow up and towards light

Question 9

what effect does auxin have on roots

Answer 9

-auxin inhibits cell growth
-cells with high concentrations of auxin will be smaller
-grows away/down from light

Question 10

gravitropism

Answer 10

ability to move in response to gravity

Question 11

positive gravitropism

Answer 11

grows downwards towards pull of gravity

Question 12

negative gravitropism

Answer 12

grows towards away from pull of gravity

Question 13

3 things associated with the hormone ethylene

Answer 13

-fruit ripening
-flower fading
-abscission

Question 14

apical dominance

Answer 14

growth is restricted to main stems, lateral buds of each leaf remain dormant