6 photosynthesis

Question 1

photosynthesis

Answer 1

converts solar energy into cellular energy (glucose)

Question 2

stomata

Answer 2

are small pores on the leaf epidermis to allow gas exchange

Question 3

chloroplasts

Answer 3

contain grana (stacks of thylakoids) used for light dependent reactions

Question 4

chlorophyll a

Answer 4

absorb light and are in thylakoids

Question 5

why are leaves green?

Answer 5

the color of the pigment is derived from the wavelengths of reflected light

Question 6

the abundance of pigments change over time so …..

Answer 6

spring = leaves green = more chlorophyll a/b
fall = leaves brown = less chlorophyll a/b

Question 7

paper chromatography

Answer 7

is used to separate pigments by their solubility in solvents and determine Rf values
- separates pigments by size & solubility

Question 8

primary pigment

Answer 8

chlorophyll a

Question 9

accessory pigment

Answer 9

they capture light energy and transfer it to chlorophyll a
ex: chlorophyll b, carotenes, xanthophyll