Photosynthesis

Question 1

Photosynthesis equation

Answer 1

6CO(2) + 6H(2)O -> C(6)H(12)O(6) + 60(2)

Question 2

Adaptations of the leaf

Supported by a stem and petiole to

Answer 2

To expose as much of it as possible to sunlight and air

Question 3

Adaptations of the leaf

Large surface area to

Answer 3

Expose as much of it as possible to sunlight and air

Question 4

Adaptations of the leaf

Thin to

Answer 4

Allow sulk that to penetrate to all cells; to allow CO2 and O2 to diffuse in and out as quickly as possible

Question 5

Adaptations of the leaf

Stomata in lower epidermis to

Answer 5

Allow CO2 and O2 to diffuse in and out in the shade

Question 6

Adaptations of the leaf

Air spaces in spongy mesophyll to

Answer 6

To allow CO2 and O2 to diffuse to and from all cells

Question 7

Adaptations of the leaf

No chloroplasts in epidermis to

Answer 7

To allow sunlight to penetrate to mesophyll layer

Question 8

Adaptations of the leaf

Chloroplasts containing chlorophyll present in mesophyll layer to

Answer 8

Absorb sunlight to provide energy for photosynthesis

Question 9

Adaptations of the leaf

Palisade cells arranged end on to

Answer 9

Keep as few cells as possible between sunlight and chloroplasts

Question 10

Adaptations of the leaf

Chloroplasts in palisade cells arranged broadside on, especially in dim light to

Answer 10

Expose as much chlorophyll as possible to sunlight

Question 11

Adaptations of the leaf

Chlorophyll arranged on flat membranes inside chloroplast

Answer 11

To expose as much chlorophyll as possible to sunlight

Question 12

Adaptations of the leaf

Xylem vessels within short distance of every mesophyll cell to

Answer 12

Supply water to chloroplasts for photosynthesis

Question 13

Adaptations of the leaf

Phloem tubes within short distance of every mesophyll cell to

Answer 13

Take away organic products of photosynthesis

Question 14

Where does most photosynthesis take place and why?

Answer 14

Palisade layer because it has most chloroplasts, most sunlight and is biggest

Question 15

Photosynthesis word equation

Answer 15

Carbon dioxide + water -> oxygen + glucose

Question 16

Do we test for starch or glucose in leaves?

Answer 16

Starch

Question 17

Why do we test for starch in plants instead of glucose?

Answer 17

Glucose is small and soluble and gets used up in respiration

Question 18

Why don’t we test for oxygen in the plant?

Answer 18

Too hard to collect

Question 19

Is there more stomata in the upper or lower epidermis?

Answer 19

Lower

Question 20

Why are there more stomata in the lower epidermis?

Answer 20

Not in direct sunlight, so gas doesn’t diffuse too fast

Question 21

What adaptation would a plant in arid conditions have regarding stomata?

Answer 21

Less stomata to prevent water loss

Question 22

What is light intensity measured in?

Answer 22

Lux

Question 23

What is concentration measured in?

Answer 23

PPM (parts per million)

Question 24

What is temperature measured in?

Answer 24

°C

Question 25

What is light intensity measured in?

Answer 25

Lux

Question 26

What is concentration measured in?

Answer 26

PPM (parts per million)

Question 27

What is temperature measured in?

Answer 27

°C

Question 28

What do guard cells do?

Answer 28

Control opening and closing if stomata

Question 29

What does stomata do?

Answer 29

Let’s gases in and out

Question 30

What do chloroplasts do?

Answer 30

Absorb light for photosynthesis

Question 31

What does the waxy cuticle do?

Answer 31

Waterproof layer to stop leaf fro, drying up

Question 32

What is the purpose of spongy mesophyll?

Answer 32

Allows gases to circulate

Question 33

What is the purpose of the palisade layer?

Answer 33

Chloroplasts absorb light

Question 34

Photosynthesis word equation

Answer 34

Carbon dioxide + water -> glucose + oxygen

Question 35

Are there more stomata in the upper or lower epidermis?

Answer 35

Lower

Question 36

Why are there more stomata in the lower epidermis?

Answer 36

Not in direct sunlight, prevents water loss

Question 37

What is the inverse square law?

Answer 37

I = 1/d(^2)