Percy's Crossword

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Across
  1. 4. Alkaline pH ajuster
  2. 6. Sometimes referred to as a "soil knife" or a "weeding knife", is a heavy serrated multi-purpose steel blade for gardening jobs such as digging or cutting
  3. 7. A crop grown for the protection and enrichment of the soil
  4. 8. Better for weeding than a traditional hoe
  5. 9. Major component in chlorophyll and amino acids
  6. 11. Organic compound with acidic properties. The most common ones are the carboxylic acids, whose acidity is associated with their carboxyl group –COOH
  7. 13. Measures acidity or alkalinity
  8. 14. Potential of hydrogen
  9. 15. A simple organic compound containing both a carboxyl and an amino group
  10. 16. ex.) alfalfa, clover, peas, beans, chickpeas, lentils, lupin bean, mesquite, carob, soybeans, peanuts and tamarind
  11. 18. of or denoting the acid radical —COOH, present in most organic acids
Down
  1. 1. This is responsible for holding together the cell walls of plants
  2. 2. Plants must have this for normal growth and maturity; plays a role in photosynthesis, respiration, energy storage and transfer, cell division, cell enlargement and several other processes
  3. 3. Parts per million
  4. 5. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
  5. 6. A long-handled gardening tool with a thin metal blade, used mainly for weeding and breaking up soil
  6. 10. Is needed in photosynthesis; regulates plant CO2 intake
  7. 12. A green pigment, present in all green plants, responsible for the absorption of light to provide energy for photosynthesis
  8. 14. Acid pH ajuster
  9. 17. Any of the minute pores in the leaf or stem of a plant