nutirtion in plants

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Across
  1. 6. outer layer of a plant that give protection.
  2. 7. the mode of nutrition where two of them get their mutual benifit helping eachother
  3. 8. water and minerals absorbed by plants are transported to leaves through this?
  4. 10. the cells of green leaves and young stems of plants contain numerous green strutures they are?
Down
  1. 1. the ultimate source
  2. 2. a bacteria which can take atmospheric nitrogen.
  3. 3. organisms that live on dead plants and animals and derive their food from them.
  4. 4. example of saprotrops.
  5. 5. example of insectivorous.
  6. 9. it is the source of energy.