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Plant Growth and Mineral Nutrition — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYPlant Growth and Mineral Nutrition4 Marks
Question
Phytochrome
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Answer

  1. These are proteinaceous pigments present
  2. Phytochrome exists in two interconvertible forms. Pr and Pfr.
  3. Phytochromes are located in cell membranes of chlorophyllous cells.
  4. When Pfr absorbs red light it is converted to Pr.
  5. Pfr is accumulated in plants during daytime and inhibits flowering in SDP but initiates flowering in LDP

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