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 Multiple Choice QuestionsMultiple Choice Questions

81.

Which of the following groups of minerals are micronutrients?

  • Magnesium, Manganese, Copper, Boron and Phosphorus

  • Manganese, Copper, Magnesium, Zinc and Boron

  • Nitrogen, Potassium, Manganese, Copper and Iron

  • Iron, Manganese, Copper, Molybdenum and Zinc

  • Iron, Manganese, Copper, Molybdenum and Zinc


82.

Match the mineral in Column I with the enzyme activated in
Column II and choose the correct option.

Column I Column II
(A) Magnesium (1) Alcohol dehydrogenase
(B) Molybdenum (2) Phosphoenolpyruvate carboxylase
(C) Zinc (3) Nitrogenase

  • A - 2; B - 3; C - 1

  • A - 1; B - 2; C - 3

  • A - 2; B - 1; C - 3

  • A - 3; B - 2; C - 1

  • A - 3; B - 2; C - 1


83.

Free living nitrogen fixing aerobic bacterium is

  • Rhodospirillum

  • Anabaena

  • Nostoc

  • Beijernickia

  • Beijernickia


84.

Match the Column I with that of Column II and choose the correct combination from the options given

Column I- Essential elements Column II- Deficiency causes
A. N, K, Mg, S, Fe, Mn, Zn, and Mo 1. Inhibit cell division
B. N, K, S and Mo 2. Necrosis
C. Ca, Mg, Cu and K 3. Delay in flowering
D. N, S and Mo 4. Chlorosis

  • A - 4; B - 3; C - 2; D - 1

  • A - 1; B - 2; C - 3; D - 4

  • A - 4; B - 1; C - 2; D - 3

  • A - 2; B - 3; C - 4; D - 1

  • A - 2; B - 3; C - 4; D - 1


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85.

Which of the following is not a role played by potassium in plant growth?

  • Translocation of carbohydrates

  • Maintaining anion-cation balance

  • Opening and closing of stomata

  • Synthesis of protein

  • Synthesis of protein


86.

Which of the following microbes produces nitrogen-fixing nodules in non-leguminous plants?

  • Rhizobium

  • Frankia

  • Azotobacter

  • Pseudomonas

  • Pseudomonas


87.

N2 + 8e + 8H+ + 16ATP  2NH3 + H2 + 16ADP + 16 Pi
The above equation refers to

  • Nitrification

  • Reductive amination

  • Denitriofication

  • Transamination

  • Transamination


88.

Thiobacillus is a group of bacteria helpful in carrying out

  • Chemoautotrophic fixation

  • Nitrification

  • Denitrification

  • Nitrogen fixation


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89.

Which of the following is used as a best genetic vector in plants?

  • Bacillus thurengiensis

  • Agrobacterium tumifaciens

  • Pseudomonas putida

  • All of the above


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