Exams › NEET › Biology

If by radiation all nitrogenase enzymes are inactivated, then there will be no

1. fixation of nitrogen in legumes
2. fixation of atmospheric nitrogen
3. conversion from nitrate to nitrite in legumes
4. conversion from ammonium to nitrate in soil

Correct answer: fixation of atmospheric nitrogen

Solution

Nitrogenase is the enzyme complex responsible for fixing atmospheric nitrogen (N2) into ammonia. If all nitrogenase enzymes are inactivated, that process stops completely, so atmospheric nitrogen cannot be fixed.

Related NEET Biology questions

• The most important mineral for blood coagulation is
• Match the following concerning essential elements and their functions in plants: (a) Iron (i) Photolysis of water (b) Zinc (ii) Pollen germination (c) Boron (iii) Required for chlorophyll biosynthesis (d) Manganese (iv) IAA biosynthesis Select the correct option:
• In which of the following forms is iron absorbed by plants?
• In which of the following, all three are macronutrients?
• Minerals known to be required in large amounts for plant growth include:
• Which of the following elements is responsible for maintaining turgor in cells?

⚔️ Practice NEET Biology free + battle 1v1 →