Plant Growth And Development Question 81
Question: Etiolated seedlings are produced by germinating seeds and keeping them in total darkness. Under which of the following conditions will plants kept in the dark-begin to synthesise chlorophyll?
Options:
A) After being given a pulse of blue light.
B) After being given a pulse of red light.
C) After being given a pulse of red light followed by a pulse of far-red light.
D) After being given a pulse of far-red light followed by a pulse of red light.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] The pulse of red light converts $ {P_{r}} $ to $ {P_{fr}} $ Subsequent pulses of far-red light stimulate changes that lead to chlorophyll synthesis.
BETA
