LIFE PROCESSES

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Across
  1. 4. Red pigment that carries oxygen in blood. (10)
  2. 9. Chambers of the heart that pump blood out. (8)
  3. 11. Tube carrying urine from kidney to bladder. (6)
  4. 12. Site where digestion of proteins begins. (7)
  5. 13. Enzyme present in saliva. (6)
  6. 14. Tiny pores present on leaves. (7)
  7. 15. Air sacs in lungs where gas exchange occurs. (7)
  8. 16. Plant tissue that transports food. (6)
  9. 17. Fluid part of blood. (6)
Down
  1. 1. Plant tissue that transports water. (5)
  2. 2. Finger-like projections in the small intestine. (5)
  3. 3. Breakdown of food to release energy. (11)
  4. 5. Functional unit of kidney. (7)
  5. 6. Blood vessels carrying blood away from the heart. (7)
  6. 7. Process by which green plants prepare food. (13)
  7. 8. Main waste removed by kidneys. (4)
  8. 10. Removal of metabolic wastes from the body. (9)