Specialised Cells 0.0 / 5 ? BiologyCells, tissues and organsGCSEAQA Created by: kennedylilyCreated on: 10-01-16 10:07 What are palisade leaf cells adapted for? Photosynthesis 1 of 23 What do palisade leaf cells contain lots of? Chloroplasts 2 of 23 Where are most chloroplasts found in this cell? At the top 3 of 23 Why are most chloroplasts located in this place? So that they're nearer to the light 4 of 23 Why are palisade leaf cells tall? This means that they have a large surface area exposed down the side for absorbing CO2 from the air in the leaf 5 of 23 Why are palisade leaf cells thin? So that lots of them can be packed at the top of the leaf 6 of 23 What are guard cells adapted to do? Open and close pores 7 of 23 What are guard cells shaped like? A kidney 8 of 23 What do guard cells open and close in a leaf? The stomata 9 of 23 What happens to the guard cells when the plant has lots of water? The guard cells fill with it and go plump and turgid 10 of 23 When there is lots of water in the leaf, what do the stomata do? They open 11 of 23 Why do the stomata do this when there is lots of water in the leaf? So that gases can be exchanged for photosynthesis 12 of 23 What happens to the guard cells when the plant is short of water? The guard cells lose water and become flaccid 13 of 23 When there is little water in the leaf, what do the stomata do? They close 14 of 23 Why do the stomata do this when there is little water in the leaf? This helps stop too much water vapour escaping 15 of 23 What two properties do guard cells have that allow them to do the opening and closing work? 1. Thin outer walls 2. Thickened inner walls 16 of 23 What other property do guard cells have that allow them to save water? They are sensitive to light, so they close at night to save water without losing out on photosynthesis 17 of 23 What do guard cells control in a leaf? Gas exchange and water loss 18 of 23 What shape do red blood cells have? A concave shape 19 of 23 What does this shape allow the cell to do easily? It gives it a big surface area for absorbing oxygen. It also helps them to pass smoothly through capillaries to reach body cells 20 of 23 What do red blood cells contain? Haemoglobin 21 of 23 What do red blood cells not contain? A nucleus 22 of 23 Why do red blood cells not contain this? To leave even more room for haemoglobin 23 of 23
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