Flashcards in Photosynthesis + Plant Hormones Deck (23)
What are the three affecting factors in terms of the rate of photosynthesis?
What's the reaction for photosynthesis?
Co2 + H2O --> glucose + O2
What plant is used in the photosynthesis experiment?
Why is a gas syringe used?
More accurate than counting bubbles
How do you calculate light intensity?
What is diffusion?
Particles move from a HIGH concentration to a LOW concentration
What is osmosis?
The diffusion of WATER across a partially permeable membrane down a concentration gradient
What is active transport?
Uses ENERGY to pump particles from a LOW to HIGH concentration
List some adaptations?
• Root hair cells
• Lots of mitochondria for active transport
What is water used for in transpiration?
•Carrying mineral ions
•Keeping cells rigid so the plants don't wilt
•Cooling the leaves
What is water transpiration?
Water lost by the lead through evaporation via stomata
What is the transpiration?
• water is lost through evaporation
• water clings and climbs xylem
• water is pushed into roots by osmosis
What are the best conditions for transpiration?
What is translocation?
Moving products of photosynthesis up and down the plant via phloem
In the algal beads experiment what is the dependant variable?
In the algal beads experiment what is the independant variable?
List some control variables in the algal beads experiment?
•Volume of water
•Number/size of algal beads
•Temperature of bulb and room
Why is an LED used?
So it doesn't heat up
List some adaptations of a leaf
Large surface area to absorb sunlight
Air space for diffusion of Co2 and O2
Phototropism.. roots and shoots
How does phototropism work?
Auxins are pulled down by gravity
What are gibberellins used for?
To start germination