1.

    The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodules is

    A

    Amminase

    B

    Nitrogenase

    C

    Nitrate reductase

    D

    Nitrite reductase

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Nitrogen Fixation, Nitrogenase Enzyme, Leguminous Root Nodules

    Related Questions

    1.

    Enzyme required for nitrogen fixation is

    A

    Nitrogenase

    B

    Nitroreductase

    C

    transaminase

    D

    Transferase

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Nitrogen fixation, Enzymes, Biochemistry

    2.

    The ultimate source of nitrogen is

    A

    Atmospheric nitrogen

    B

    Nitrogen present in soil

    C

    Nitrogen that comes from water

    D

    Nitrogen fixed by the process of photosynthesis

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Nitrogen Cycle, Atmospheric Nitrogen

    3.

    Which of the following processes is facilitated by Thiobacillus bacteria?

    A

    Phosphorus solubilization

    B

    Sulfur oxidation

    C

    Iron reduction

    D

    Methane production

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    PYQ YEAR: 2019
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Sulfur Cycle, Denitrification, Bacteria

    4.

    Which aquatic fern performs N2{N_2} fixation?

    A

    Azolla

    B

    Nostoc

    C

    Salvia

    D

    All

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Nitrogen fixation, Aquatic ferns, Azolla, Symbiosis

    5.

    Select the match ones.I Nitrosomonas – Nitrite to nitrateII Thiobacillus - DenitrificationIII Nostoc - Free-living nitrogen-fixerIV Azotobacter - Anaerobic nitrogen-fixer

    A

    I and II

    B

    III and IV

    C

    II and III

    D

    II and IV

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Nitrosomonas, Nitrite, Nitrate, Thiobacillus, Denitrification, Nostoc, Nitrogen fixation, Azotobacter, Aerobic, Anaerobic

    6.

    During DNA replication, which enzyme is responsible for ensuring correct base pairing?

    A

    RNA polymerase

    B

    Helicase

    C

    Ligase

    D

    DNA polymerase

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    PYQ YEAR: 2017
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :DNA Replication, DNA Polymerase, Enzymes, Base Pairing

    7.

    The process of decay of dead organic matter is known as

    A

    Denitrification

    B

    Nitrification

    C

    Nitrogen fixation

    D

    Ammonification

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Decomposition, Nitrogen cycle, Ammonification

    8.

    Free living nitrogen fixing bacteria are

    A

    Bacillus polymixa

    B

    Rhodoseudomonas

    C

    E. coli

    D

    Anabaena

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Nitrogen fixation, Bacteria, Microbial classification

    9.

    Which of the following elements play a major role in nitrogen metabolism by activating the enzyme, nitrogenase?

    A

    Cu+2C{u^ + }^2

    B

    Zn+2Z{n^{ + 2}}

    C

    Mg+2M{g^{ + 2}}

    D

    Mn+2M{n^{ + 2}}

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :nitrogen metabolism, nitrogenase, enzyme activation, micronutrients

    10.

    Which of the given prokaryotes fixes nitrogen symbiotically as well as in free living state?

    A

    Rhizobium

    B

    Thiobacillus

    C

    Anabaena

    D

    Azotobacter

    Question Tags
    📚 Subject:Botany
    📑 Chapter:Mineral Nutrition
    🎯Topic:N2-Metab0Lism
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :Nitrogen fixation, Prokaryotes, Symbiosis, Free-living organisms

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