Bilology-Photosynthesis
- Created by: cezzarob
- Created on: 07-11-18 11:04
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- photosynthesis
- leaf adaptations
- broad leaves-big SA for light to fall on
- thin-short diffusion distances
- veins-brings water to xylem cells
- air spaces-allow co2 to enter cells+oxygen to diffuse out
- veins-brings water to xylem cells
- thin-short diffusion distances
- guard cells-open and close stomata- regulate gas extange
- broad leaves-big SA for light to fall on
- endothermic
- needs input of energy from environment
- occurs in chloroplasts- contain chlorophyll
- energy is transferred from environment to chloroplasts by light
- bubbling pondweed
- add sodium bicarbonate= source of co2
- stand tube of pondweed into beaker of water to control heat
- bubbling pondweed
- algae
- aquatic-adapted for photosynt- hesising in water
- large SA
- absorbs co2 dissolved in water
- large SA
- aquatic-adapted for photosynt- hesising in water
- metabolic reaction
- leaf adaptations
- can test leaves for starch: iodine-brown>blue black
- some used immediately(for respiration)- lots converted into insoluble starch and stored
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