photosynthesis

• what is chlorophyll?


  The green pigment inside chloroplasts that plants need for photosynthesis to take place
• what is chloroplast?


  the part of a plant cell where photosynthesis occurs
• what is glucose?


  the sugar plants make during photosynthesis
• what is a palisade cell?


  A type of leaf cell with a lot of chloroplasts
• what is photosynthesis?


  The process by which plants use carbon dioxide and water to produce glucose and water in the presence of light and chlorophyll
• What is starch?


  Extra glucose from photosynthesis is stored as this substance which can be tested with iodine
• What is stomata?


  Small holes in the lower surface of a leaf that allows gases in and out
• what is xylem?


  Tubes in veins that carry water around a plant
• Photosynthesis formula?


  Carbon dioxide + water ~(chlorophyll light energy) glucose + oxygen
• how can we check for photosynthesis?

  -test for oxygen

  -in water plants look for bubbles
• Organisms that make their own food are called?

  Producers
• What happens to the glucose made?

  It turns into starch which is a natural polymer
• What three factors affect how quickly photosynthesis happens?

  -light intensity

  -temperature

  -carbon dioxide
• Photosynthesis is how plants?

  Plants produce some of the nutrients they need to survive
• plants harness the energy from the sun and

  store it chemically in their own tissues
• When plants are eaten by animals

  They take the chemical energy and use it to live and store it themselves
• What is oxygen?


  A product of photosynthesis
• What is the waxy cuticle and what is its function?

  It is the waterproof top layer of the leaf which prevents water from escaping the uppermost surface
• What are the stoma?


  They are open pores which allow gas exchange with the environment and can close when water is low to make sure photosynthesis can still happen
• what is the spongy mesophyll

  it is a layer of cells with air spaces so that gases can diffuse in and around the leaf
• What is the palisade cell?

  It is a layer of tightly packed cells that are filled with chloroplasts which make sure all light is absorbed and little light can pass through
• Where in a cell does photosynthesis occur?

  The chloroplasts
• What are four adaptations of a leaf for photosynthesis?

  lots of chlorophyll, thin, large surface area and veins
• In which layer of the leaf does most of photosynthesis occur?

  the palisade layer
• What mineral is needed for the production of chlorophyll?

  Magnesium
• What 2 substances do most root hair cells absorb

  oxygen and water
• what is the green pigment which absorbs light

  chlorophyll
• how are roots adapted for taking in water

  they are long and have root hairs
• what features of a cell are only in plant cells

  Chloroplasts vacuole and cell wall
• what is glucose made from and what is it used for

  made from starch and is used for respiration