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    CBSE

    Subject

    Biology
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    NEET Biology : Mineral Nutrition

    Multiple Choice Questions

    31.

    The enzyme responsible for atmospheric nitrogen fixation is

    • nitrogenase

    • hydrogenase

    • oxygenase

    • carboxylase

    Answer
    • 32.

    Heterocysts are present in

    • Riccia

    • Ulothrix

    • Albugo

    • Nostoc

    Answer
    • 33.

    The deficiencies of micro-nutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport ?

    • Cu, Mn, Fe

    • Co, Ni, Mo

    • Mn, Co, Ca

    • Ca, K, Na

    Answer
    • 34.

    Which is essential for root hair growth?

    • Zinc

    • Calcium

    • Molybdenum

    • Sulphur

    Answer
    • 35.

    Molybdenum causes

    • mottling

    • wilting

    • reclamation

    • chlorosis

    Answer
    • 36.

    Hydroponics is a

    • soilless culture

    • airless culture

    • waterless culture

    • none of these

    Answer
    • 37.

    Lathyrism is caused by

    • dal

    • moth dal

    • khesari dal

    • Glycine

    Answer
    • 38.

    Insects captured by insectivorous plants fulfil their requirements of

    • enzymes

    • oxygen

    • nitrogen

    • water

    Answer
    • 39.

    The non- photosynthetic, non- symbiotic N2 fixing bacteria are

    • Rhodobacter

    • Spirillum

    • Azotobacter

    • All of these

    Answer
    • 40.

    A plant requires magnesium (Mg) for

    • Holding cells together

    • Protein synthesis

    • Chlorophyll synthesis

    • Cell wall development

    Answer
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