full transcript

From the Ted Talk by Thomas W. Cronin: Which animal has the best eyesight?

Unscramble the Blue Letters

When ciwnnorg the crueatre with the best color vision, the picture gets complicated. Different photoreceptors are sensitive to specific waves of light, meaning the crolos we see are largely determined by what kinds of photoreceptors we have. Presumably, the more types of color photoreceptors an animal has, the better its color voiisn. Dogs have just two types. Humans have three. And we are far outdone by some birds, fishes, and insects. Bluebottle butterflies have at least 15 teyps of photoreceptors. Seven of them are attuned to dntcsiit beuls and greens, which researchers think might help them track each other during high-speed chases. Mantis shrimp have a whopping 16 kinds of photoreceptors, with five reserved just for the ultraviolet, or UV, stcuprem, which humans can’t see. But experiments suggest that the mantis shrimp’s ailbtiy to discriminate between colors is more limited than you might eecxpt. Exactly how they use their complex eyes is a mystery. Meanwhile, with just four kinds of color photoreceptors, goldfish actually excel at drnecsiing subtle differences in shades.

Open Cloze

When ________ the ________ with the best color vision, the picture gets complicated. Different photoreceptors are sensitive to specific waves of light, meaning the ______ we see are largely determined by what kinds of photoreceptors we have. Presumably, the more types of color photoreceptors an animal has, the better its color ______. Dogs have just two types. Humans have three. And we are far outdone by some birds, fishes, and insects. Bluebottle butterflies have at least 15 _____ of photoreceptors. Seven of them are attuned to ________ _____ and greens, which researchers think might help them track each other during high-speed chases. Mantis shrimp have a whopping 16 kinds of photoreceptors, with five reserved just for the ultraviolet, or UV, ________, which humans can’t see. But experiments suggest that the mantis shrimp’s _______ to discriminate between colors is more limited than you might ______. Exactly how they use their complex eyes is a mystery. Meanwhile, with just four kinds of color photoreceptors, goldfish actually excel at __________ subtle differences in shades.

Solution

  1. expect
  2. creature
  3. crowning
  4. colors
  5. types
  6. spectrum
  7. discerning
  8. blues
  9. distinct
  10. vision
  11. ability

Original Text

When crowning the creature with the best color vision, the picture gets complicated. Different photoreceptors are sensitive to specific waves of light, meaning the colors we see are largely determined by what kinds of photoreceptors we have. Presumably, the more types of color photoreceptors an animal has, the better its color vision. Dogs have just two types. Humans have three. And we are far outdone by some birds, fishes, and insects. Bluebottle butterflies have at least 15 types of photoreceptors. Seven of them are attuned to distinct blues and greens, which researchers think might help them track each other during high-speed chases. Mantis shrimp have a whopping 16 kinds of photoreceptors, with five reserved just for the ultraviolet, or UV, spectrum, which humans can’t see. But experiments suggest that the mantis shrimp’s ability to discriminate between colors is more limited than you might expect. Exactly how they use their complex eyes is a mystery. Meanwhile, with just four kinds of color photoreceptors, goldfish actually excel at discerning subtle differences in shades.

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
vision requires 2

Important Words

  1. ability
  2. animal
  3. attuned
  4. birds
  5. bluebottle
  6. blues
  7. butterflies
  8. chases
  9. color
  10. colors
  11. complex
  12. complicated
  13. creature
  14. crowning
  15. determined
  16. differences
  17. discerning
  18. discriminate
  19. distinct
  20. dogs
  21. excel
  22. expect
  23. experiments
  24. eyes
  25. fishes
  26. goldfish
  27. greens
  28. humans
  29. insects
  30. kinds
  31. largely
  32. light
  33. limited
  34. mantis
  35. meaning
  36. mystery
  37. outdone
  38. photoreceptors
  39. picture
  40. researchers
  41. reserved
  42. sensitive
  43. shades
  44. shrimp
  45. specific
  46. spectrum
  47. subtle
  48. suggest
  49. track
  50. types
  51. ultraviolet
  52. uv
  53. vision
  54. waves
  55. whopping