Photosynthesis
- Created by: Sarah
- Created on: 21-01-13 15:53
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- Photosynthesis
- Produces food for plant
- Food is glucose
- Happens in chloroplasts
- Contains chlorophyll
- absorb sunlight and uses energy to convert CO2 and H2O into glucose
- Oxygen produced as by-product
- absorb sunlight and uses energy to convert CO2 and H2O into glucose
- Contains chlorophyll
- Happens in leaves of green plants
- Main purpose of leaves
- CO2 diffuses into the air spaces in a leaf
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- Underneath of leaf is an exchange surface
- Diffuses through Stomata
- Oxygen and Water Vapor diffuse out through Stomata
- Diffuses through Stomata
- The glucose produced in photosynthesis may be converted into insoluble starch for storage. Plant cells use some of the glucose produced during photosynthesis for respiration.
- Some glucose in plants and algae is used:? to produce fat or oil for storage? to produce cellulose, which strengthensthe cell wall? to produce proteins.
- To produce proteins, plants also use nitrate ions thatare absorbed from the soil.
- Things need for photosynthesis
- Carbon Dioxide + Water =(light energy)= Glucose + Oxygen
- Rate of Photosynthesis - Limiting Factors
- Light Intensity
- L.F at night
- Volume of CO2
- If Light and Temp are okay then CO2 must be L.F
- Tempertaure
- L.F in winter
- Limiting Factor anything that stops it happening faster
- Light Intensity
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- Produces food for plant
- Water reach cells via Xylem
- Things need for photosynthesis
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