Mineral Nutrition Test

Mineral Nutrition

This is Mineral Nutrition Test-05 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Nitrification involves
  • A
    \(N{H^{4 + }}\) and \(N{O^{3 - }}\)
  • B
    All of above
  • C
    \(N{H_3}\)and \(NO_2^ - \)
    Correct
  • D
    \(N{H_3}\) and \(N{H_4}\)
2
The process of decomposition organic nitrogen into ammonia is known as
  • A
    Biological nitrogen fixation
  • B
    nitrification
  • C
    Ammonification
    Correct
  • D
    Denitrification
3
Name the best known symbiotic nitrogen fixing bacterium is
  • A
    Azotobactor
  • B
    Nitrobacter
  • C
    Nitrosomonas
  • D
    Rhizobium
    Correct
4
The nitrogen exists as two nitrogen atoms joined by
  • A
    triple covalent bonds
    Correct
  • B
    tetra covalent bonds
  • C
    Di covalent bonds
  • D
    monocovalent bond
5
The process of conversion of nitrogen in to ammonia is known as
  • A
    Denitrification
  • B
    Biological nitrogen fixation
    Correct
  • C
    Electrical nitrogen fixation
  • D
    industrial nitrogen fixation
6
The enzyme involved in biological nitrogen fixation are
  • A
    Nitrogenase
    Correct
  • B
    oxygenase
  • C
    Carboxylase
  • D
    dehydrogenase
7
Choose the odd one out among the following
  • A
    Rhizobium
  • B
    Bacillus anabaena
  • C
    Pseudomonas
    Correct
  • D
    Azotobacter
8
Which among the following is NOT the source of nitrogen?
  • A
    Xylem
    Correct
  • B
    Industrial combustion
  • C
    forest fire
  • D
    Automobile exhaust
9
During the development of root nodule in soya bean. The cells lead to formation of root nodules in
  • A
    outer cortex and inner cortex
  • B
    Outer cortex and pith
  • C
    Vascular tissue and pericycle
  • D
    inner cortex and pericycle
    Correct
10
Biological nitrogen fixation was discovered by
  • A
    Nehar and Sakmann
  • B
    Winograndsky
    Correct
  • C
    Gericke
  • D
    Liebig
11
Nodule formation is stimulated by two phytohormones
  • A
    Auxin and Cytokinin
    Correct
  • B
    None of these.
  • C
    Cytokinin and Gibberellins
  • D
    Auxin and Abscesic acid
12
Plant with zinc deficiency show reduced biosynthesis of
  • A
    Auxin
    Correct
  • B
    Cytokinin
  • C
    Abscisic acid
  • D
    Ethylene
13
The ion which activates many enzymes involved in photosynthesis,respiration, nitrogen metabolism is
  • A
    potassium ions
  • B
    manganous ions
    Correct
  • C
    sodium ions
  • D
    zinc ions
14
Which two minerals are not needed by the majority of plants but very much needed by almost all animals?
  • A
    Oxygen and Nitrogen
  • B
    Sodium and Iodine
    Correct
  • C
    Sodium and Magnesium
  • D
    Carbon and Calcium
15
Entry of ions into cells is called
  • A
    Outflux
  • B
    Inflow
  • C
    Out flow
  • D
    Influx
    Correct