Unit 8: Lesson 8.1

Question 1

the process by which autotrophs (plants) produce their food by harnessing energy from the sun

Answer 1

Photosynthesis

Question 2

● organic molecules tgat selectively absorb light of specific wavelengths

● built in the thylakoid membranes

Answer 2

Pigments

Question 3

● are not absorbed but reflected

● reflected light gives each pigment its characteristic color

Answer 3

Wavelength of light

Question 4

● green and non-green portions

● less green = reduce photosynthetic efficiency

● “advantage: serves as camouflage; less likely to be eaten by herbivores”
- Thomas Givnish

Answer 4

Variagated leaves (Variegation)

Question 5

2 classifications of Pigments

Answer 5

1. Principal Pigments
2. Accessory Pigments

Question 6

● site for photosynthesis

● converts solar energy to chemical energy

● consists of a porphyrin ring with a central magnesium core

● is the most common and most important photosynthetic in plants

● appears to be bluish-green

● absorbs: violet, blue, and red light

● reflects: green

Answer 6

Chlorophyll a

Question 7

Types of Accessory Pigments:

● absorbs: blue and orange but reflects olive green

● energy capturing pigments

● does not participate directly in light reactions

● yellow green

● breaks down faster than the other pigments

Answer 7

Chlorophyll b

Question 8

Types of Accessory Pigments:

present in brown algae, diatoms, and dinoflagellates

Answer 8

Chlorophyll c

Question 9

Types of Accessory Pigments:

present in red algae

Answer 9

Chlorophyll d

Question 10

Types of Accessory Pigments:

● various shades of red, yellow, and orange

● absorbs: violet, blue, and green light

● appears once the chlorophyll breaks down

● important in photoprotection