Photosynthesis Flashcards
Define chlorophyll
They are the green pigment found in the chloroplast in the plant. They trap in the energy from the light which they use to make food ( glucose)
Define Producer
Producer is an organism that makes it’s own food
Define consumer
Consumer is an organism that eats other organism to survive
Draw a labelled diagram of palisade cell (plant cells located on the leaves).
Check, should contain these labelled parts:
1- Chloroplast
2- Nucleos
3- Mitochondria
4- Cytoplasm
5- Vacuole
6- Cell wall
7- Cell membrane
What is the function of the chloroplast?
What is the function of Chlorophyll?
Chloroplast contains chlorophyll.
Chlorophyll is a green pigment that is found in chloroplasts
Chlorophyll transfers energy from light into energy in chemicals, for the synthesis of carbohydrates
What is the function of cell membrane
Controls what goes in and out of the cell
What is the function of the nucleus
Controls what the cell does
What is the function of the cytoplasm
The place where the cell’s reactions occur
function of chloroplast
Contain chlorophyll and are where photosynthesis occurs
Function of vacuole
A storage place containing cell sap
function of cell wall
Supports and protects the cell
Define photosynthesis
Photosynthesis is the process in which plants manufacture carbohydrates ( sugar) from raw material using energy from light
Define catalyst
Catalyst is a substance that increases the rate ( helps with) a chemical reaction without it undergoing any permanent change
What are the raw material in photosynthesis
1- Water
2- Carbon dioxide
What is the catalyst in photosynthesis
Chloroplast
What are the products in phtotosynthis
Main product: Glucose
By product: Oxygen
What is the source of energy in photosynthesis
Light
1.Three things plants need to make their own food
1- Carbon dioxide
2- Water
3- Sunlight
What does photosynthesis produce?
Glucose and oxygen
2.What is photosynthesis?
Photosynthesis is the process in which plants manufacture carbohydrates ( sugar) from raw material using energy from light
4.How is water transported to the leaf?
Transported to the leaf via the xylem
5.Where does photosynthesis occur?
Chloroplast which contains chlorophyll
Draw a flow diagram of photosynthesis
Check
Write down one adaptation of root hair cell
1- Large surface area to increase absorption of water.
Word equation for photosynthesis reaction
Chlorophyll Carbon dioxide + Water ————–>
sunlight
Glucose+oxygen
Symbol equation for photosynthesis reaction-
6CO2 + 6H2O ➔ C6H12O6 + 6O2
What happens to excess glucose
Excess glucose is stored as starch in other parts of the plant for when it need to use it. It turn iodine BLUE-BLACK. It is used for ENERGY and BIOMASS
Suggest how the structure of the palisade cell is adapted for photosynthesis.
1- Contains lots of chloroplast
2- Closely packed
3- Upper part of the leaf
Name the gas given off by the plant
Oxygen
Explain what would happen to the number of bubbles (gas produced) if the plant was placed in the dark ( 3 marks)
1- No light
2- No photosynthesis
3- Number of bubbles will decrease/stop
Explain what would happen to the number of bubbles (gas produced) if the plant was placed in the dark ( 3 marks)
1- No light
2- No photosynthesis
3- Number of bubbles will decrease/stop
Describe the role of stomata
Stomata allows gases to diffuse in and out of the cell
Distance between lamp and beaker (cm)
Number of bubbles released per minute
10
15
20
7
30
3
40
1
50
0
- Describe the trend you notice
- Explain the trend
1- As the distance between the lamp and beaker in cm increases, the number of bubbles released per minute decreases.
2- When the light is pushed further away, less light is being trapped in by the chloroplast. This means less energy is being used to make oxygen and glucose. As it moves further away, less and less energy is used until there is not enough energy from the light to have photosynthesis and if there is no photosynthesis then there is no glucose and oxygen.
