Short-day plants (Multiple Choice)

Short-day plants
  a. flower in early spring.
  b. will not bloom until they have been exposed to a
  dark period longer than a critical length.
  c. flower in the fall.
  d. will not bloom if their dark period is interrupted
  by a short pulse of intense red light.
  e. do all of these.

Question 2

Which of the following statements is false?
  a. Long-day plants bloom in the summer.
  b. Short-day plants bloom at noon.
  c. Short-day plants bloom in late summer and early
  fall.
  d. Chrysanthemums and cockleburs are short-day
  plants.
  e. Day-neutral plants flower when mature enough
  to do so.