Gas Exchange- Flowering Plants
- Created by: Haeinh
- Created on: 26-07-16 19:46
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- Gas Exchange (Flowering Plants)
- What is Gas Exchange?
- required for two critical processes
- Photosythesis
- Process in which green plants produce glucose
- Plants take in CO2 + Water + minerals from surrondings
- Converts To
- Sugar (Glucose) + O2
- Converts To
- Plants take in CO2 + Water + minerals from surrondings
- Details
- Gas In- CO2 Gas Out- O2
- Time- Daytime Only (requires sun)
- CO2 + H2O ---------->(light energy +chlorophyll) -----------> Glucose + O2
- Plants take in CO2 + Water + minerals from surrondings
- Converts To
- Sugar (Glucose) + O2
- Converts To
- Requires Radiant Energy
- Time- Daytime Only (requires sun)
- (O2 waste product)
- Plants take in CO2 + Water + minerals from surrondings
- Process in which green plants produce glucose
- Respiration
- Details
- Gas In - O2 Gas Out- CO2 (+ Water Vapour)
- (CO2 waste product)
- Time- All times
- Glucose +O2 = CO2 + H2O + Energy
- Gas In - O2 Gas Out- CO2 (+ Water Vapour)
- Release of energy from glucose- takes place in every cell
- All cells need to respire to produce the energy plants need
- Details
- Photosythesis
- required for two critical processes
- Diffusion
- Efficient Adaptions
- Structure Of Leaf
- Large Surface Area
- Naturally broad = lots area for diffusion
- Thin In Size
- Gases only have to travel short distance to reach needed cells.
- Air Spaces Inside Leaf - Spongy Mesophyll Layer
- Lets gases like O2 and CO2 move easier between cells
- Also increases surface area for gas exchange
- Lets gases like O2 and CO2 move easier between cells
- Presence Of Stomata (Stoma)
- Little holes in the lower surface
- Role
- Lets gases like CO2 and O2 diffuse in/out
- Open/Close controlled by guard cells surrounding them
- Stomata close in dark
- Photosynthesis can't happen in the dark- no need to let in CO2
- When Closed- water can't escape
- Stomata close in dark
- Open/Close controlled by guard cells surrounding them
- Lets gases like CO2 and O2 diffuse in/out
- Large Surface Area
- Structure Of Leaf
- What is Gas Exchange?
- Stomata open wider in light
- Greater demand for gas exchange while the plant in photosynthesising + respiring
- Open/Close controlled by guard cells surrounding them
- Stomata close in dark
- Photosynthesis can't happen in the dark- no need to let in CO2
- When Closed- water can't escape
- Stomata close in dark
- CGP- P.G 30
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