Photosynthesis topic – KS3
Plant structure:
Roots – absorb water *and minerals– root hairs increase the
surface area to maximise efficiency
Stem – support the plant and transport materials throughout the
plant
Leaves – photosynthesis occurs
Photosynthesis
‘Photosynthesis is the process by which green plants
convert light energy into chemical energy in the form of
glucose.’
(The process that produces ‘food’ in the form of glucose )
- Takes place inside the chloroplasts (these contain
chlorophyll)
Carbon dioxide + Water Glucose + Oxygen
6CO2 + 6H2O C6H12O6 + 6O2
- Light energy is converted to chemical energy which is
stored in glucose
- Plants then use the glucose for growth (increase biomass),
or is stored as starch
- Oxygen (and some water vapour) diffuses out via the
stomata
4 things required for photosynthesis:
1. Sunlight
2. Chlorophyll
3. Carbon dioxide – enters leaves (via diffusion) through the
stomata
4. Water – taken up by roots, transported by the stem to
leaves
, Leaves
External structure:
Plant structure:
Roots – absorb water *and minerals– root hairs increase the
surface area to maximise efficiency
Stem – support the plant and transport materials throughout the
plant
Leaves – photosynthesis occurs
Photosynthesis
‘Photosynthesis is the process by which green plants
convert light energy into chemical energy in the form of
glucose.’
(The process that produces ‘food’ in the form of glucose )
- Takes place inside the chloroplasts (these contain
chlorophyll)
Carbon dioxide + Water Glucose + Oxygen
6CO2 + 6H2O C6H12O6 + 6O2
- Light energy is converted to chemical energy which is
stored in glucose
- Plants then use the glucose for growth (increase biomass),
or is stored as starch
- Oxygen (and some water vapour) diffuses out via the
stomata
4 things required for photosynthesis:
1. Sunlight
2. Chlorophyll
3. Carbon dioxide – enters leaves (via diffusion) through the
stomata
4. Water – taken up by roots, transported by the stem to
leaves
, Leaves
External structure:
