Download presentation
Presentation is loading. Please wait.
Published byBarbra Underwood Modified over 6 years ago
1
$16.07 AP Bio “If I were an enzyme, I would be DNA helicase so I could unzip your genes” “If I were an enzyme, I would be DNA helicase… it’s an AP Bio thing… you wouldn’t understand!”
2
How do plants respond to seasons?
AP Bio How do plants respond to seasons?
3
PHOTOPERIODOCITY
4
PHOTOPERIODOCITY
5
Some plants have Cytochrome protein
Protein that detects seasonal changes in night length This signals for flowers!
6
Cytochrome protein Pigment molecule (absorbs light)
enzyme that transfers phosphate groups
7
this protein undergoes a shape change when red light is present or far-red light is present
8
Short day plants = (LONG NIGHT PLANTS)
some flowers bloom in response to the short days/longer nights of fall, or winter
9
Short day plants = (LONG NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) The length of NIGHT was interrupted in the scenario on the right
10
Long day plants = (SHORT NIGHT PLANTS)
This means some flowers bloom in response to the: long days/shorter nights of spring or summer.
11
Long day plants = (SHORT NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) The length of NIGHT was interrupted in the scenario on the right
12
short day plants = (LONG NIGHT PLANTS)
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)
13
long day plants = SHORT NIGHT PLANTS
(hint: look at the amount of DARKNESS) (hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)
14
put it all together (hint: look at the amount of DARKNESS)
(hint: read this from the bottom --> up) (hint: it is the RED shown last that matters)
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.