MCQ
$C_{4}$ pathway is advantageous over $C_{3}$ pathway in plants. because it
  • Occurs in relatively low $c o_{2}$ concentration
  • B
    Uses more amount of water
  • C
    Occurs in relatively low $O_{2}$ concentration
  • D
    Is less efficient in energy utilisation

Answer

Correct option: A.
Occurs in relatively low $c o_{2}$ concentration
a
A plant with the $C_{4}$ pathway is advantageous over a plant with a $C_{3}$ pathway as the former can occur in low $CO _{2}$ concentrations.

When the weather is hot and arid, the leaves close their stomata to reduce water loss. This closure results in low $CO _{2}$ concentrations and thus, leading to both loss of $RuBP$ and inhibition of Calvin-Benson cycle.

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