Nutrition in plants

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Across
  1. 3. / study of plants
  2. 6. / cells of green leaf and young stems contain numerous green structure are called
  3. 7. / a gas which isnt necessary for photosynthesis
Down
  1. 1. / tiny holes in the leaf
  2. 2. / green plants able to make their own food
  3. 4. / process of taking in food by an organism
  4. 5. / bacteria or fungi that use saprotrophic nutrition are known as