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11th Standard Botany - Mineral Nutrition English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021

11th Standard

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Botany

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. If a plant is provided with all mineral nutrients but, Mn concentration is increased, what will be the deficiency?

    (a)

    Mn prevent the uptake of Fe, Mg but not Ca

    (b)

    Mn increase the uptake of Fe, Mg and Ca

    (c)

    Only increase the uptake of Ca

    (d)

    Prevent the uptake Fe, Mg, and Ca

  2. Plants deficient of element zinc, shows its effect on the biosynthesis of plant growth hormone

    (a)

    Auxin

    (b)

    Cytokinin

    (c)

    Ethylene

    (d)

    Abscisic acid

  3. The major portion of the dry weight of plant comprises of  ________

    (a)

    Nitrogen, phosphorous and potassium

    (b)

    Calcium, magnesium & Sulphur

    (c)

    Carbon, nitrogen and hydrogen

    (d)

    Carbon, hydrogen & oxygen

  4. A plant which is being researched as cleaning agent for polluted waters  ________

    (a)

    Pongamia

    (b)

    Withania

    (c)

    Lemon

    (d)

    Moringa

  5. ________ is a mineral required  greatest  amount by plants.

    (a)

    P

    (b)

    K

    (c)

    N

    (d)

    Mg

  6. Kheira disease of Rice is caused due to deficiency  of  __________

    (a)

    Mo

    (b)

    Zn

    (c)

    B

    (d)

    O

  7. ___________ is a saprophyte.

    (a)

    Monotropa

    (b)

    Cycas

    (c)

    Anabaena

    (d)

    Cuscuta

  8. ___________ is an activator for RUBP Carboxylase and PEP Carboxylase.

    (a)

    Manganese

    (b)

    Magnesium

    (c)

    Zinc

    (d)

    Chlorine

  9. The enzyme ________ is a constituent of urease and dehydrogenase.

    (a)

    Molybdenum

    (b)

    Boron

    (c)

    Nickel

    (d)

    Zinc

  10. Whip tail disease of cauliflower is due to deficiency of __________

    (a)

    B

    (b)

    Zn

    (c)

    Mo

    (d)

    CI

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