Energy Flow B2

Edexel course

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Biosphere... part of the Earth and its atmosphere where life exists

For Biospheres to be self containable they would have to have ;

  • enough plants to photosynthesise enough for supply of oxygen and food
  • the ability to recycle all waster materials
  • a method to keep warm
  • a method of melting Martain ice.

Plants vs Animal cells

Nucleus - Both            Cytoplasm- Both           Cell Membrane-Both                Cellulose Cell Wall- Animal doesnt   Vacuole- Animal doesnt, plant nearly always           Chloroplasts- Animal doesnt

Specialised plant cells; Xylem transport water and minerals from the roots

Phloem transport food in solution from the leaves to where it is needed, or for storage.

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