Leaves!

Question 1

What makes leaves green

Answer 1

Green pigment called chlorophyll

Question 2

Where is chlorophyll found

Answer 2

Chloroplasts

Question 3

True or false: Glucose can be used to make chlorophyll

Answer 3

True

Question 4

What does chlorophyll contain

Answer 4

Magnesium and Nitrogen

Question 5

True or false: Chloroplasts can be used to make chlorophyll

Answer 5

False

Question 6

Where does photosynthesis happen

Answer 6

In chloroplasts

Question 7

True or false: Chlorophyll is a protein

Answer 7

False

Question 8

How does the structure of the leaf help it to serve its purpose as a part of the plant?

Answer 8

• It’s flat and wide (large SA) which allows CO2 to diffuse in at a faster rate
• Thin to allow sunlight to pass through, allowing the cells inside to photosynthesize. The thinness also allows CO2 to reach cells by diffusion faster

Question 9

What happens when the plant doesn’t have enough magnesium and nitrate ions?

Answer 9

The leaves turn yellow, can’t grow well

Question 10

Name the parts of the leaf, top to bottom

Answer 10

Cuticle, upper epidermis, palisade mesophyll, spongy mesophyll, lower epidermis, guard cell and stoma

(xylem and phloem on one side)

Question 11

How does the structure of the upper epidermis help it to fullfill its purpose in the leaf

Answer 11

Cells are packed together to prevent water vapor from escaping, no chloroplasts as they’re not responsible for photosynthesis, transparent to allow sunlight to reach the palisade mesophyll

Question 12

How does the structure of the palisade mesophyll help it to fullfill its purpose in the leaf

Answer 12

The palisade mesophyll cells have lots of chloroplasts as their primary role is photosynthesis. Close to the top of the leaf to get lots of sunlight

Question 13

How does the structure of the cuticle help it to fullfill its purpose in the leaf

Answer 13

Thin and transparent to allow sunlight through to the palisade mesophyll, waterproof to prevent water from leaking into the cell

Question 14

How does the structure of the spongy mesophyll help it to fullfill its purpose in the leaf

Answer 14

Many air spaces between them to allow CO2 and O2 to diffuse around the leaf more easily

Question 15

How does the structure of the lower epidermis help it to fullfill its purpose in the leaf

Answer 15

Have guard cells and stomata, allowing for the diffusion of gases while closing at night to minimize water loss

Question 16

Name limiting factors for photosynthesis

Answer 16

1. Supply of carbon dioxide
2. Light intensity
3. Temperature, as this affects the activity of enzymes
4. Stomata (open close, gases diffusion)

Question 17

Word equation for photosynthesis

Answer 17

water + carbon dioxide —(sunlight and chlorophyll)—-> glucose + oxygen

Question 19

Symbol equation for photosynthesis

Answer 19

2CO2+2H2O—>C6H12O6+6O2

Question 20

How are stomata a limiting factor for photosynthesis

Answer 20

On hot days the stomata close to prevent loss of water, meaning the rate of photosynthesis would go down because the stomata is how carbon dioxide enters the plant

Question 21

What is the role of chlorophyll in photosynthesis

Answer 21

capture the light energy of the sun for photosynthesis