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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 11. photosynthesis in higher plants4 Marks
MCQ
Assertion : Cyclic pathway of photosynthesis first appeared in some eubacterial species.

Reason : Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • ✓
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: B.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
b
Photosynthetic bacteria have a substance called bacteriochlorophyll. The bacteriochlorophyll pigment absorbs light in the extreme $UV$ and infra-red parts of the spectrum which is outside the range used by normal chlorophyll, seen in plants.

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