b4 a-d pig (h). what is the job of air spaces?
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B4 a-d Pig (H)B4 a-d Pig (H)
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What is the job What is the job of air spaces?of air spaces?
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Allow gases to diffuse from palisade Allow gases to diffuse from palisade cell to air/air to palisade cellcell to air/air to palisade cell
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List 3 adaptations List 3 adaptations of a leaf for of a leaf for efficient efficient photosynthesisphotosynthesis
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Broad (large surface area)Broad (large surface area) This (short diffusion distance)This (short diffusion distance) Palisade cells have many chloroplasts (containing Palisade cells have many chloroplasts (containing
chlorophyll)chlorophyll) Veins bring water/remove sugarVeins bring water/remove sugar Stomata allow carbon dioxide in/oxygen outStomata allow carbon dioxide in/oxygen out Transparent epidermisTransparent epidermis Palisade cells near top of leafPalisade cells near top of leaf Air spacesAir spaces Large surface area to volume ratioLarge surface area to volume ratio
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What is osmosisWhat is osmosis
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Diffusion of water Diffusion of water from a high water from a high water concentration to a concentration to a low water low water concentration concentration across a partially across a partially permeable permeable membranemembrane
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What will happen What will happen to a red blood cell to a red blood cell if you inject pure if you inject pure water into your water into your veins?veins?
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Water will enter the cell by osmosis until it Water will enter the cell by osmosis until it burstsbursts
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Explain the importance of osmosis in plant Explain the importance of osmosis in plant supportsupport
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Water enters cells Water enters cells by osmosisby osmosis
Increased volume Increased volume of water inside of water inside vacuole pushes out vacuole pushes out against cell wallagainst cell wall
Cells are turgid Cells are turgid (stiff)(stiff)
Turgid cells Turgid cells support plantsupport plant
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What is the job of What is the job of tube Z?tube Z?
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Transporting sugars around the plantTransporting sugars around the plant
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What is this What is this device called device called and what is it and what is it for?for?
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PotometerPotometer Measuring water uptake (allow Measuring water uptake (allow
transpiration)transpiration) in a plantin a plant
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Why does increasing the wind speed Why does increasing the wind speed increase the rate of transpiration?increase the rate of transpiration?
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Water vapour is removed from Water vapour is removed from outside the stomataoutside the stomata
Increased the concentration gradient Increased the concentration gradient between air space and airbetween air space and air
Faster diffusionFaster diffusion
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List 2 ways desert List 2 ways desert plants are adapted plants are adapted to reduce water to reduce water lossloss
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Extra thick waxy cuticleExtra thick waxy cuticle Few stomata/stomata often closedFew stomata/stomata often closed Stomata in pits/surrounded by hairsStomata in pits/surrounded by hairs Small leaves (reduced surface areas)Small leaves (reduced surface areas)
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HOW do stomata close at night?HOW do stomata close at night?
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Photosynthesis stopsPhotosynthesis stops Glucose used up by respirationGlucose used up by respiration Water concentration in guard cell Water concentration in guard cell
increasesincreases Water leaves guard cell by osmosisWater leaves guard cell by osmosis Guard cell becomes flaccid and Guard cell becomes flaccid and
changes shapechanges shape Stomata closesStomata closes
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Why does a plant Why does a plant need magnesium?need magnesium?
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To make chlorophyll (for To make chlorophyll (for photosynthesis)photosynthesis)
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What will a plant What will a plant look like if it is look like if it is grown with very grown with very little nitrate?little nitrate?
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smallsmall
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How do minerals How do minerals enter a root hair?enter a root hair?
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Active transportActive transport
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How is active How is active transport different transport different from diffusion?from diffusion?
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Moves substances Moves substances from low to high from low to high concentrationconcentration
Requires energyRequires energy