CBSE Questions for Class 11 Medical Biology Mineral Nutrition Quiz 14 - MCQExams.com

State whether the following statements are true or false.
Transfusion tissue is the substitute of lateral veins as it helps in the conduction of water.
  • True
  • False
Choose the correct answer from the alternatives given.
In plants a common symptom caused by deficiencies of Ca, K, Mg and P is the:
  • appearance of a dead necrotic area
  • poor development of vasculature
  • bending of the leaf tip
  • formation of carotenes in plenty
Choose the correct answer from the alternatives given.
Which of the following is not a macronutrient?
  • Ca
  • P
  • Mn
  • N
Which one of the following organisms does not have the ability to fix atmospheric nitrogen?
  • Nostoc
  • Ulothrix
  • Rhizobium
  • Azotobacter
More than _______ elements of the ______ discovered so far are found in different plants.
  • 60, 105
  • 105, 60
  • 30, 60
  • 4, 105
Three features of nitrogenous excretory products (M, N and O) of animals are tabulated given.
Features of excretory productsMNO
ToxicityHighVery lowLow
Energy cost to produceLowModerateHigh
Water loss to excretionHighModerateLow

The animals that secrete M, N and O as their major excretory product would be
  • M: human, N: pigeon, O: tadpole
  • M: cockroach, N: cat, O: snake
  • M: crow, N: lizard, O: dog
  • M: goldfish, N: rat, O: lizard
Which of the following is not a beneficial element?
  • Na
  • CO
  • Si
  • All of the above
Enzyme pepsin acts upon food at a pH of about
  • 3 to split proteins
  • 2 to split carbohydrate
  • 7 to change protein into peptones
  • 2 to change protein in amino acids
Which of the following is not an aerobic nitrogen fixing free living bacteria?
  • Azospirillum
  • Azotobacter
  • Beijerinickia
  • Chromatium
'Nif' gene for nitrogen fixation in cereal crops like wheat, jowar etc., is introduced by cloning
  • Agrobacterium tumefaciens.
  • Rhizobium melloti
  • Bacillus thuringiensis
  • Rhizopus stolonifer
Which of the following is a characteristics of Frankia?
  • Free-living in soil, but symbiotic for atmospheric nitrogen fixation.
  • Produces nodules on the roots of leguminous plants.
  • Found in association with Rhizobium.
  • Is pathogenic to plants.
Nitrogenase enzyme is present in?
  • Prokaryotes
  • Eukaryotes
  • Both
  • None
Which of the following statements is correct ?
  • Azotobacter fix atmospheric nitrogen in root nodules of plants
  • Cyanobacteria , such as Anabeana and Nostoc are important in mobilising Phosphates and Potassium for plant nurrition in soil.
  • At present it is not possible to grow maize without chemical fertilizers
  • None of these
The cell of a root nodule in leguminous plant shows a rod shaped structure called_________.
  • Bacteria
  • Infection thread
  • Bacteroid
  • Ureide
Conversion of N$$\equiv$$N to $$NH_3$$ occurs in plant cell by?
  • Free-living bacteria
  • Symbiotic bacteria
  • Anaerobic microbes
  • Nitrogenase
Boron, Zinc and Manganese are usually referred to as
  • Micronutrients
  • Macronutrients
  • Soil Vitamins
  • MBZ nutrients
Which one of the following symptoms is not due to manganese toxicity in plants?
  • Calcium translocation in shoot apex is inhibited.
  • Deficiency of both Iron and Nitrogen is induced.
  • Appearance of brown spots surrounded by chlorotic veins.
  • None of the above.
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Practice Class 11 Medical Biology Quiz Questions and Answers