B4 a-d Pig (F)B4 a-d Pig (F)

Name the pores in the bottom of a leafName the pores in the bottom of a leaf

StomataStomata

What is the job What is the job of air spaces?of air spaces?

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

List 3 adaptations List 3 adaptations of a leaf for of a leaf for efficient efficient photosynthesisphotosynthesis

Broad (large surface area)Broad (large surface area) This (short diffusion distance)This (short diffusion distance) Palisade cells have many Palisade cells have many

chloroplasts (containing chlorophyll)chloroplasts (containing chlorophyll) Veins bring water/remove sugarVeins bring water/remove sugar Stomata allow carbon dioxide Stomata allow carbon dioxide

in/oxygen outin/oxygen out

What is osmosisWhat is osmosis

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

What is a partially permeable What is a partially permeable membrane?membrane?

A membrane that A membrane that only lets certain only lets certain (small) molecules, (small) molecules, like water, throughlike water, through

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?

Water will enter the cell by osmosis until it Water will enter the cell by osmosis until it burstsbursts

What do you call a plant cell that has lost What do you call a plant cell that has lost a lot of water by osmosisa lot of water by osmosis

Flaccid/plasmolysedFlaccid/plasmolysed

Name tube ZName tube Z

PhloemPhloem

What is the job of phloem?What is the job of phloem?

Transporting sugars around the plantTransporting sugars around the plant

What is this What is this device called device called and what is it and what is it for?for?

PotometerPotometer Measuring water uptake (allow Measuring water uptake (allow

transpiration)transpiration) in a plantin a plant

What is transpiration?What is transpiration?

Loss of water vapour from the leavesLoss of water vapour from the leaves

List 2 ways of increasing the rate of List 2 ways of increasing the rate of transpirationtranspiration

Increase temperatureIncrease temperature Increase wind speedIncrease wind speed Decrease humidityDecrease humidity Increase light intensityIncrease light intensity

List 4 minerals needed by a plantList 4 minerals needed by a plant

NitrateNitrate PhosphatePhosphate PotassiumPotassium MagnesiumMagnesium

Why does a plant Why does a plant need magnesium?need magnesium?

To make chlorophyll (for To make chlorophyll (for photosynthesis)photosynthesis)

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?

smallsmall

How do minerals How do minerals enter a root hair?enter a root hair?

Active transportActive transport