11.1 Photosynthesis overview

Question 1

site of photosynthesis

Answer 1

chloroplasts

Question 2

7 adaptations of leaf

Answer 2

1. large SA
   2.minimum
   overlapping leaf arrangement
2. thin
3. transparent cuticle and epidermis
4. long, narrow upper mesophyll
5. high volume stomata
   7.network of xylem and phloem

Question 3

large SA

Answer 3

absorbs as much sunlight as possible

Question 4

arrangement of leaves

Answer 4

avoids shadowing

Question 5

thin

Answer 5

short diffusion distance for gases
light absorption pathway is short

Question 6

transparent cuticle and epidermis

Answer 6

let light through to photosynthetic mesophyll cells

Question 7

long, narrow upper mesophyll cells

Answer 7

packed with chloroplasts to collect sunlight

Question 8

numerous stomata

Answer 8

mesophyll cells are only short diffusion pathway from one

open and close in response to light intensity

Question 9

air spaces in lower mesophyll

Answer 9

rapid diffusion of gas

Question 10

network of xylem and phloem

Answer 10

brings water to leaf cells

carries away sugars produced

Question 11

Equation

Answer 11

6CO2 +6H20 -> C6H12O6 + 6O2

Question 12

3 main stages

Answer 12

1. capturing light energy by chloroplast pigments
2. light-dependent reaction
3. light- independent reaction

Question 13

grana

Answer 13

stacks of up to 100 disc-like thylakoids

Question 14

thylakoids

Answer 14

site of light-dependent stage
chlorophyll inside

Question 15

inter-granal lamellae

Answer 15

tubular extensions on thylakoids that join up to adjacent grana

Question 16

stroma

Answer 16

fluid-like matrix where the light-independent stage takes place

contains starch grains