KS3 Science · Biology
Photosynthesis
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Key words
Photosynthesis How plants and algae make glucose, using energy from light
Glucose The sugar made in photosynthesis: a plant’s food
Chlorophyll The green substance that absorbs light
Chloroplast The part of a plant cell where photosynthesis happens
Carbon dioxide The gas a plant takes in for photosynthesis
Oxygen The gas given out in photosynthesis
Reactant A substance that is used up in a chemical reaction
Product A substance that is made in a chemical reaction
Starch A store of glucose in a plant
Iodine solution Turns blue-black when starch is there
Stomata Tiny pores in a leaf that let gases in and out
Guard cells The pair of cells that open and close a stoma
Palisade cell A tall leaf cell packed with chloroplasts
Root hair cell A root cell with a large surface area for taking in water
Xylem Tubes that carry water up from the roots
Nitrates Minerals a plant needs to make proteins for growth
Magnesium The mineral a plant needs to make chlorophyll
Producer A living thing that makes its own food, at the start of a food chain