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Photosynthesis, Transpiration and Translocation

Terms in this set (19)

Name the process by which glucose is moved from a leaf to other parts of the cell
Translocation
What is the scientific name given to the evaporation of water from a leaf?
Transpiration
On which side of the leaf are there more stomata?
Underside/lower
What is covering the top layer of the leaf to reduce the loss of water?
Waxy Cuticle
Which organ in a plant does water enter through?
Root (through root hair cells)
Do stomata open or close when it is night time?
Close
Describe the structure of xylem
Dead, hollow tubes strengthened with lignin
Describe the structure of phloem
Elongated cells with a sieve plate and companion cell
State four factors that increases the rate of transpiration
1) High wind intensity 2) high light intensity 3) arid (dry) 4) high temperature
Why does high wind intensity increase transpiration?
Moves water in air away so increases difference in concentration gradient
Why does high light intensity increase transpiration?
Causes stomata to open
Why does arid conditions increase the rate of transpiration?
There is a bigger difference in concentration gradient of water
Why does high temperature increase the rate of transpiration?
Water particles have more kinetic energy
Photosynthesis
Plants use the sun's energy to convert water and carbon dioxide into sugars
Balanced equation for photosynthesis
6CO2 + 6H2O ------> C6H12O6 + 6O2
Word equation for photosynthesis
Carbon dioxide + water -> glucose + oxygen
Palisade mesophyll
Photosynthetic tissue below the epidermis in a leaf.
Guard Cells
Control the opening and closing of stomata
Stomata
Small openings on the underside of a leaf through which oxygen and carbon dioxide can move
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