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Match List I with List II for a C4 plant.
List IList II
P. PEP1. Enzyme in mesophyll cells
Q. PEPcase2. Primary CO2 acceptor
R. Oxaloacetic acid3. Enzyme in bundle sheath cells
S. RuBisCO4. First stable product

  • (a) P-2, Q-3, R-4, S-1 Your answer
  • (b) P-4, Q-1, R-2, S-3 Your answer
  • (c) P-1, Q-2, R-4, S-3 Your answer
  • (d) P-2, Q-1, R-4, S-3 Correct
Your answer: Correct answer: (d)
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Explanation

Why (d) is correct

PEP is the primary acceptor (2), PEPcase is the mesophyll enzyme (1), OAA is the first stable product (4), and RuBisCO is the bundle sheath enzyme (3). So P-2, Q-1, R-4, S-3.

Why the other options are wrong

  • (a) · your answer This places PEPcase in the bundle sheath.
  • (b) · your answer This mixes up PEP and OAA.
  • (c) · your answer This swaps PEP and PEPcase.
NCERT point: C4: PEP + CO2 → OAA (PEPcase, mesophyll).
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