Nutrition in plants

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Across
  1. 2. An organism that obtains its food from dead and decaying material.
  2. 4. A plant which lives on another living plant to take food and shelter.
  3. 5. The process of food intake and its utilisation in the body
  4. 6. The process by which green plants prepare their food.
Down
  1. 1. The gas released by green plants during photosynthesis.
  2. 3. A green coloured pigment present in the leaves