Phytochrome Red (P _r) Differs from Phytochrome Far-Red (P _fr)

question 15

Multiple Choice

Phytochrome red (P _r) differs from phytochrome far-red (P _fr) in that

• A) P _r is converted to P _fr during the nighttime.
• B) P _r is converted to P _fr by absorbing sunlight.
• C) P _fr is converted to P _r by absorbing sunlight.
• D) P _fr is converted to P _r by absorbing far-red light that is available at dusk.
• E) P _r is converted to P _fr by absorbing far-red light, which is available only during full daylight.

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