GCSE BIOLOGY 3

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ghoran
ID:
200048
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GCSE BIOLOGY 3
Updated:
2013-02-12 15:19:41
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  1. flowering have 2 separate types of vessel 
    xylem and phloem for transportation of substances 
  2. phloem tubes transport
    food
  3. phloem is made of
    columns of living cells with small holes in the ends to allow materials to flow through
  4. phloem transport 
    food substances (mainly dissolved sugars) made in the leaves (by photosynthesis) to growing regions (e.g. new shots) and storage organs (e.g. root tubers) of the plant 
  5. phloem transport in 
    both directions 
  6. phloem has 
    end walls 
  7. phloem is living 
    tissue 
  8. phloem has .... cells with lots of .... (to ..... ..... .... ..... .... ..... ....)
    • companion 
    • mitochondria
    • release energy from respiration for sugar transport 
  9. phloems end walls are known as 
    perforated end plates 
  10. phloem mainly transports ..... , the movement of food substances around the plant is known as ..... this requires ....
    • sucrose
    • translocation 
    • energy 
  11. xylem tubes take
    water up 
  12. xylem carry water and minerals from 
    the roots to the stem and the leaves in the transpiration system 
  13. xylem are made of 
    dead cells joined end to end with no end walls between them and a hole down the middle (lumen)
  14. the thick side walls of xylem are 
    strong and stiff which gives the plant support 
  15. is energy required for transpiration transport 
    no 
  16. sugars are made by photosynthesis in the 
    leaves 
  17. ...... is an example of a sugar by photosynthesis 
    glucose
  18. what cells in a plant need sugar and why 
    all cells in a plant need sugar for respiration 
  19. the tissue that transports sugars in plants is 
    phloem 
  20. water moves into the root by 
    osmosis 
  21. root have a branching structure to provide a 
    large surface area for absorbing water 
  22. roots are covered in long projections called root hairs which
    increase the surface area for water absorption 
  23. water moves up the stem in 
    xylem vessels 
  24. water evaporates from the leaves this is called 
    transpiration 

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