CBSE  /  Class 11  /  Biology  /  Mineral Nutrition

  • 1. 
    Oxygen scavangers present in root nodules of legumes is

  • haemoglobin
  • leg haemoglobin
  • cyano haemoglobin
  • none of these

  • 2. 
    Which one of the following is not a micronutrient?

  • Magnesium
  • Molybdenum
  • Boron
  • Zinc

  • 3. 
    Which of the following is not a macronutrient

  • iron
  • calcium
  • manganese
  • phosphorus

  • 4. 
    Insectivorous plants grow where

  • There is carbohydrate deficient soil
  • There is nitrogen deficient soil
  • Vitamin c is required
  • Hormones are required

  • 5. 
    Phytotron is meant for

  • Controlled humidity
  • Induction of mutations
  • Controlled irradiation
  • Growing plants under controlled environment

  • 6. 
    Toxicity of which element leads to the appearance of brown spots on leaves

  • Mg
  • Mn
  • Fe
  • Cu

  • 7. 
    Presence of phosphorus

  • brings about healthy root growth
  • promotes fruit ripening
  • retards protein formation
  • none

  • 8. 
    Which element is required for opening and closing of stomata?

  • P
  • K
  • Ca
  • Na

  • 9. 
    Exanthema is due to deficiency of

  • B
  • Mo
  • Mn
  • Cu

  • 10. 
    NPK denotes

  • Nitrogen, Protein, Kinetin
  • Nitrogen, Protein, Potassium
  • Nitrogen, Potassium, kinetin
  • Nitrogen, Phosphorus, Potassium
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