Show That Light is Needed for Photosynthesis (Leaving Cert Agricultural Science): Flashcards
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Purpose of light/photosynthesis experiment
Purpose of light/photosynthesis experiment
Show light is essential for photosynthesis
De-starching duration before experiment
De-starching duration before experiment
48 hours (2 days) in complete darkness
Light exposure time for photosynthesis to occur
Light exposure time for photosynthesis to occur
4-6 hours under lamp
Iodine test result when starch is present
Iodine test result when starch is present
Blue-black colour
Iodine test result when no starch present
Iodine test result when no starch present
Brown/orange colour
Purpose of warm alcohol in starch test
Purpose of warm alcohol in starch test
Removes chlorophyll from leaf
Starch in foil-covered leaf areas
Starch in foil-covered leaf areas
No starch present (brown/orange)
Starch in light-exposed leaf areas
Starch in light-exposed leaf areas
Starch present (blue-black)
Role of tinfoil in the experiment
Role of tinfoil in the experiment
Blocks light to create control area
Purpose of de-starching the plant
Purpose of de-starching the plant
Removes existing starch for fair test