Plants Maintain Higher Levels of Phytochrome at Their Growing Tips

question 11

Multiple Choice

Plants maintain higher levels of phytochrome at their growing tips where phytochrome plays important roles in growth responses to light.Phytochrome levels are also high in areas of the plant that are "greening".What does this suggest about the role of phytochrome in these "greening" zones?

• A)Phytochrome is absorbing green wavelengths of light.
• B)In these areas,phytochrome is the first step in the electron transport chain of photosynthesis.
• C)Phytochrome is facilitating the transcription and translation of photosynthesis related proteins.
• D)Phytochrome is facilitating the migration of chlorophyll pigments from other areas of the plant.

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