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STD 11 - 11. photosynthesis in higher plants — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 11. photosynthesis in higher plants1 Mark
MCQ
Engelmann's experiment with Spirogyra demonstrated that
  • A
    The full spectrum of sunlight is needed for photosynthesis
  • B
    Only red wavelengths are effective in causing photosynthesis
  • C
    Only blue wavelengths are effective
  • ✓
    Both blue and red wavelengths are effective
✓

Answer

Correct option: D.
Both blue and red wavelengths are effective
d
(d) Both blue and red wavelength are affective because the amount of oxygen released was found to be maximum in blue and red absorption band s of the chlorophyll.

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