A Botanist's Puzzle

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Across
  1. 2. the process of plants making their own food
  2. 5. a wrapper for the seeds
  3. 7. a plant that produces flowers
  4. 9. make seeds for the plant
Down
  1. 1. a plant that does not produce flowers
  2. 3. a scientist who studies plants
  3. 4. move water up the plant and help it stand up
  4. 6. absorb water for the plant and keep it from washing away
  5. 8. makes food for the plant