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Plants (Photosynthesis (Chloroplast (Light dependent reaction (happens in…
Plants
Photosynthesis
Formula
6CO2+6H2O--(Sun)-->C6H12O6+6O2
Produces oxygen
Plants need Glucose
Cellular respiration
ATP
cells to carry out cellular activities
Makes their own food
Autotrophs
Leaves
Chlorophyll
Absorbs light
Reflects green light
Plants look green
Found in the chloroplast
Chloroplast
Light dependent reaction
happens in thylacoids
Stacks of thylacoids
Granum/grana
Lights is converted
Complex process
Involving multiple photo systems
Into chemical energy
ATP
NADPH
Water is split
Electrons
Protons
Oxygen
Product of this reaction
Light independent reaction
Requires items from the light dependent reaction
Does not happen in the thylacoids
Happens in the stroma
Stroma is a fluid outside the thylacoid
Carbon dioxide must be fixed
Through a enzyme
Changes carbon dioxide into a usable form
ATP supplies energy
NADPH supplies reducing power
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Fixed carbon dioxide, ATP, NADPH
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Transpiration cohesion tension theory
Transpiration
When water vapour evaporates
Through the leaves
shows how water can move up a plant
Evaporate into the air
Against the forces of gravity
Water has a major role
properties of water H20
It can overcome gravity in situations
Roots
Absorption of water
Water moves upward
Through a vascular tissue xylem
To the leaves of the plant
Stoma/stomata
Little openings
Usually on the bottom of a leave
2 Guard cells
Open/close
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Cohesion
water is attracted to itself
Polar molecule
Electrons in one water molecule
Not destributed evenly
Adhesion
Water is attracted to something else
Varying charges on the sides of a plant
Positive and negative attraction
Allows water to attract to the side of the xylem
Root hairs
Increase surface area
Absorbs more water
Phloem
Transports sugars
Downwards
Scientists, investigations, claims
Photosynthesis
Stephen Hales
Charles Barnes
Aristotle
Transpiration cohesion tension theory
John Joly
Eugen Askenasy
Henry Horatio Dixon