Plant Nutrition

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 1. To take up mentally (6)
  2. 4. An oxide containing two atoms of oxygen in the molecule (7)
  3. 8. The outer boundary of an artifact or a material layer constituting or resembling such a boundary (7)
  4. 10. How plants make food from sunlight (14)
  5. 12. Layer of air around the Earth (10)
  6. 13. Solid homogeneous inorganic substances occurring in nature having a definite chemical composition (plural) (8)
  7. 14. The responsive adjustment of a sense organ to varying conditions (10)
  8. 16. The power to do work or make things move (6)

Down

  1. 2. Gas in the air that we need to breathe (6)
  2. 3. Any of a group of green pigments found in photosynthetic organisms (11)
  3. 5. An abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous ___ (6)
  4. 6. The main organ of photosynthesis and transpiration in higher plants (4)
  5. 7. Clear liquid we drink that falls as rain (5)
  6. 9. The metabolic processes whereby certain organisms obtain energy from organic molecules (11)
  7. 11. Fortification consisting of a strong fence made of stakes driven into the ground (8)
  8. 15. A part of an animal that has a special function or is supplied by a given artery or nerve (4)