Q33 / 200 · NEET 2022 (Phase 2) · Botany

Which of the following protects nitrogenase inside the root nodule of a leguminous plant?

A
Catalase
Correct answer
B
leg haemoglobin
C
Transaminase
D
Glutamate dehydrogenase

Solution

$L e g$-Haemoglobin is a pink $\mathrm{O}_2$ scavanger- pigment present in root nodules of leguminous plants. It helps in protection of Nitrogenase from the $\mathrm{O}_2$, as it is $\mathrm{O}_2$-sensitive enzyme.

Hence, the correct answer is option: 'B'.

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