Unit 3 - Key area 1.1 Flashcards
1
Q
What is light?
A
Light is a form of electromagnetic radiation which travels in waves.
2
Q
What is the distance between the two crests called?
A
wavelength, and is measured in nanometers. (nm)
3
Q
What are the three possible fates when lights hits a leaf?
A
Reflected, Absorbed, Transmitted.
4
Q
What is light energy absorbed by?
A
several different pigments.
5
Q
What are the four different pigments in a leaf?
A
- Chlorophyll a
- Chlorophyll b
- Carotene
- Xanthophyll
6
Q
What is an action spectrum?
A
It shows the rate of photosynthesis at each light wavelength.
