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    CBSE

    Subject

    Biology
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    NEET Biology : Mineral Nutrition

    Multiple Choice Questions

    21.

    Chlorosis is produced in the leaves due to the deficiency of Fe, Mg, Mn, S or N of these essential elements, those that are exclusive constituents of chlorophyll molecule are

    • Fe, S

    • N,S

    • Mg, S

    • Mg, N

    Answer
    • 22.

    Nitrogen-fixation in root nodules of Alnus is brought about by

    • Bradyrhizobium

    • Clostridium

    • Frankia

    • Azorhizobium

    Answer
    • 23.

    Which of the following is responsible for biological nitrogen-fixation?

    • Nife gene

    • Nitrogenase

    • Yeast alanin tRNA synthetase

    • RNA synthetase

    Answer
    • 24.

    Macromolecule chitin is

    • Nitrogen-containing polysaccharide

    • Phosphorous containing polysaccharide

    • Sulphur containing polysaccharide

    • Simple polysacchaaride

    Answer
    • 25.

     ‘Sun basket’ is

    • The device to utilize sun rays directly to meet the requirement of heat energy

    • The sufficient amount of sunlight stored in a cell

    • A device of taking a sunbath

    •  All of the above

    Answer
    • 26.

    The first stable product of fixation of atmospheric nitrogen in the leguminous plant is 

    • NO2-

    • ammonia

    • NO3-

    • glutamate

    Answer
    • 27.

    Many elements are found in living organisms either free or in form of compounds. One of the following is negligible is living organisms

    • Silicon

    • Magnesium

    • Iron

    • Sodium

    Answer
    • 28.

    The structures present in the roots to absorb water and minerals is

    • Epidermal extensions

    • Hypodermis

    • Endodermis

    • Epidermal appendages

    Answer
    • 29.

    Following are the two statements regarding the origin of life.

    1. The earliest organisms that appeared on the earth were non-green and presumably an aerobes.
    2. The first autotrophic organisms were the chemoautotrophs that never released oxygen of the above statements which on of the following options is correct?

     

    • II is correct, but I is false

    • Both I and II are correct

    • Both I and II are false

    • I is correct, but II is false

    Answer
    • 30.

    Which of the following is non-symbiotic nitrogen fixer organism?

    • VAM

    • Azotobacter

    • Anabaena

    • Rhizobium

    Answer
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