PLANT GROWTH & SEED GERMINATION

12345678910111213141516171819202122232425262728293031323334353637383940414243
Across
  1. 2. Outer protective covering of a seed
  2. 4. Inner seed-coat layer derived from the integument
  3. 5. Energy-rich molecule produced during respiration and used for cellular activities
  4. 7. Young plant present inside a mature seed
  5. 9. Condition in which a viable seed fails to germinate despite apparently favourable conditions
  6. 14. Plant whose flowering is not controlled by the length of day
  7. 16. Plant that flowers when day length is shorter than a critical duration
  8. 17. Cell division that increases the number of cells during growth
  9. 21. Initial phase of growth with relatively slow increase
  10. 22. Embryonic part that develops into the primary root
  11. 24. Treatment that weakens or breaks the seed coat to promote germination
  12. 28. Temporary failure of germination caused by unfavourable environmental conditions
  13. 31. Response of plants to the relative duration of day and night
  14. 32. Enzyme that hydrolyses stored lipids into fatty acids and glycerol
  15. 33. Phase in which growth rate gradually decreases or becomes nearly constant
  16. 35. Day length that determines flowering response in photoperiodic plants
  17. 36. Embryonic leaf that stores or absorbs food in a seed
  18. 38. Region of actively dividing cells responsible for plant growth
  19. 39. Rapid phase of growth characterized by maximum growth rate
  20. 41. Nutritive tissue that stores food for the developing embryo in many seeds
  21. 42. Type of germination in which cotyledons are lifted above the soil surface
  22. 43. Resumption of embryo growth resulting in the development of a seedling
Down
  1. 1. Young plant that develops from a germinating seed
  2. 3. Duration of light and dark periods experienced by a plant
  3. 6. Process that supplies energy required for active growth of the germinating seed
  4. 7. Phase in which newly formed cells increase in length
  5. 8. Type of scarification involving abrasion, cutting or scratching of the seed coat
  6. 10. Type of scarification using substances to weaken an impermeable seed coat
  7. 11. Enzyme that breaks storage proteins into smaller peptides and amino acids
  8. 12. Phase in which cells attain their characteristic structure and function
  9. 13. Plant that flowers when day length is longer than a critical duration
  10. 15. Protein-rich layer surrounding the endosperm in many cereal grains
  11. 18. Hypothetical flowering stimulus produced in leaves and transported to the shoot apex
  12. 19. Type of germination in which cotyledons remain below the soil surface
  13. 20. Germination of a seed while it is still attached to the parent plant
  14. 23. Initial uptake of water by a dry seed
  15. 25. Enzyme that hydrolyses starch into simpler sugars during seed germination
  16. 26. Single cotyledon characteristic of a grass or monocot seed
  17. 27. Mature ovule containing an embryo and reserve food, usually enclosed by a seed coat
  18. 29. Major carbohydrate reserve commonly mobilized during seed germination
  19. 30. Embryonic part that develops into the shoot system
  20. 33. S-shaped growth curve commonly showing lag, log and stationary phases
  21. 34. Plant hormone strongly associated with maintenance of seed dormancy
  22. 37. Permanent increase in size, volume or dry mass of a plant or its parts
  23. 40. Plant hormone that promotes enzyme production and mobilization of reserves during germination