B1.4.1

Question 1

What are the resources plants have to take in and how

Answer 1

Carbon dioxide diffuses from air into plant through the stomata
Water enters from the root hair cells via osmosis

Question 2

Formula for photosynthesis

Answer 2

Carbon dioxide + water -> glucose + oxygen
6Co2 + 6H2O -> C6H12O6 + 6O2

Question 3

Where does photosynthesis take place

Answer 3

Photosynthesis takes place inside chloroplasts. They get light energy from the sun transferred to them where Co2 + O2 react together to make glucose and oxygen.

Question 4

What are the two different stages of photosynthesis

Answer 4

Stage 1 (light dependant) - energy transferred from light splits water molecules into hydrogen ions and oxygen gas
Stage 2 (light independent) - CO2 combines with hydrogen ions to make glucose

Question 5

What type of reaction is photosynthesis

Answer 5

It is an endothermic reaction as light energy is taken in

Question 6

What is the glucose produced used for

Answer 6

Cellulose - to form cell walls
Sucrose - stored in fruit
Starch - food store
Proteins - for growth and repair
Fats and oils - food store and growth