XI: Chapter 12- Mineral Nutrition Flashcards

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1
Q

Who developed the science of hydroponics?

A

Julius Van Sachs

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2
Q

What is the concentration of macronutrients required for plant growth?

A

> 10mMol/kg

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3
Q

Give the examples of beneficial elements for a plant.

A

Na, Si, Co and Se

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4
Q

In which plant parts is potassium required in abundant quantities?

A

Buds, tissues, leaves and root tips (meristematic regions)

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5
Q

Which mineral element is the main constituent of biotin and thiamine?

A

Sulphur

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6
Q

Which microelement is required in maximum quantity?

A

Iron

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7
Q

Which mineral is a component of catalase enzyme?

A

Iron

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8
Q

Which elements are required for photolysis of water?

A

Manganese and chlorine

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9
Q

Which mineral is required for the activation of carboxylase enzyme?

A

Zinc

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10
Q

Which element is required for the synthesis of auxin?

A

Zinc

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11
Q

Which elements are required in redox reactions in plants?

A

Iron and copper

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12
Q

Which element is required for the uptake of calcium in plants?

A

Boron

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13
Q

Which element is required for pollen germination?

A

Boron

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14
Q

Which element is required for cell elongation?

A

Boron

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15
Q

Which element is required for the translocation of carbohydrates?

A

Boron

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16
Q

WHich element is required for nitrogen metabolism?

A

Molybdenum

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17
Q

Which element is a part of the enzymes nitrogenase and nitrate reductase?

A

Molybdenum

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18
Q

Chlorosis is caused by the deficiency of which elements?

A

N, Fe, Mn, Zn, Mg, Ca, Cu, Cl, S, K

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19
Q

Mottled chlorosis is caused by the deficiency of

A

N, K, Mo

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20
Q

Premature leaf fall occurs due to the deficiency of

A

N, P

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21
Q

What is the actual reason for mottle chlorosis?

A

Development of anthocyanin

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22
Q

Necrosis occurs in plants because of the deficiency of

A

Ca, Mg, Cu, K

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23
Q

Premature death of plant occurs due to the deficiency of

A

K

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24
Q

Poorly developed vasculature in plants occurs due to the deficiancy of

A

P

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25
Q

Loss of apical dominance and appearance of bushy habit in plants occurs due to the deficiency of

A

K

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26
Q

Cotton rust occurs due to the deficiency of

A

K

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27
Q

Deficiency of which element can lead to stunted growth

A

Ca

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28
Q

Curling of younger leaves occurs due to the deficiency of

A

Ca

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29
Q

Black heart of celery occurs due to the deficiency of

A

Ca

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30
Q

Marginal curling in leaves occurs due to the deficiency of

A

Mg

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31
Q

Interveinal chlorosis occurs due to the deficiency of

A

Mg, Fe, Mn

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32
Q

Sand drown of tobacco occurs due to the deficiency of

A

Mg

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33
Q

Chlorosis of younger leaves occurs due to the deficiency of

A

Sulphur

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34
Q

Reduced nodulation in legumes occurs due to the deficiency of

A

S, B

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35
Q

Tea yellow diseasse occurs due to the deficiency of

A

Sulphur

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36
Q

Development of an extensive root system is a symptom of deficiency of sulphur. True/false

A

True

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37
Q

Interveinal chlorosis first in older leaves occurs due to the deficiency of

A

Mg

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38
Q

Interveinal chlorosis first in younger leaves occurs due to the deficiency of

A

Iron

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39
Q

Green netting of citrus occurs due to the deficiency of

A

Fe

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40
Q

Grey specks of oat occur due to the deficiancy of

A

Mn

41
Q

Marsh spot disease in pea occurs due to the deficiency of

A

Mn

42
Q

Little leaf of brinjal is caused by the deficiency of

A

Zn

43
Q

Kharia disease if rice is caused by the deficiency of

A

Zn

44
Q

Rosette formation of leaves and leaf malformation occurs due to the deficiency of

A

Zn

45
Q

White bud of crucifers is caused due to the deficiency of

A

Zn

46
Q

White tip of maize is caused due to the deficiency of

A

Zn

47
Q

Dieback disease is caused due to the deficiency of

A

Cu

48
Q

Reclamation disease is caused due to the deficiency of

A

Cu

49
Q

Blackening of potato tuber is caused due to the deficiency of

A

Cu

50
Q

Brown heart of turnip is caused due to the deficiency of

A

B

51
Q

Heart rot of sugarbeet is caused due to the deficiency of

A

B

52
Q

Hollow stem of cauliflower is caused due to the deficiency of

A

B

53
Q

Loosening of inflorescence of cauliflower is caused due to the deficiency of

A

Mo

54
Q

Whiptail of cauliflower is caused due to the deficiency of

A

B

55
Q

Bronze colour of leaves is caused due to the deficiency of

A

Cl

56
Q

Abscission of flowers is caused due to the deficiency of which elements?

A

Cl, N, S, Mo

57
Q

Deficiency of N, K and Mg are first seen in which parts of the plant?

A

Olderleaves

58
Q

Inhibition of cell division occurs due to the deficiency of which elements?

A

N, K, S, Mo

59
Q

Toxic concentration is that concentration of mineral element in plants which reduces the weight of the tissues by

A

10%

60
Q

The appearance of brown spots surrounded chlorotic veins in plants signifies

A

Mn toxicity

61
Q

Excess of Mn may induce the deficiency of

A

Mg and Ca

62
Q

How are elements absorbed in plants in the first phase?

A

Passively

63
Q

How are elements absorbed in the second phase in plants?

A

Actively

64
Q

Which element is called the most critical element in plants?

A

Nitrogen

65
Q

What is diazotrophy?

A

Biological nitrogen fixation

66
Q

Does Rhodospirillum fix nitrogen aerobically or anaerobically?

A

Anaerobically

67
Q

Does Bacillus fix nitrogen aerobically or anaerobically?

A

Anaerobically

68
Q

Does azotobacter fix nitrogen aerobically or anaerobically?

A

Aerobically

69
Q

Does beijernickia fix nitrogen aerobically or anaerobically?

A

Aerobically

70
Q

Which symbiotic bacteria is found in the roots of Alnus?

A

Frankia

71
Q

Which bacteria help in ammonification of atmospheric nitrogen?

A

Bacillus

72
Q

Nitrites are formed by which bacteria?

A

Nitrococcus, nitrosomonas

73
Q

Nitrates are formed by which bacteria?

A

Nitrocysits and nitrobacter

74
Q

Which bacteria cause denitrification?

A

Thiobacillus and Pseudomonas

75
Q

What is the role of nitrate reductase?

A

Conversion of nitrates into ammonia

76
Q

In transammination, amino group of one amino acid is transfered to

A

Keto group of another amino acid

77
Q

Which genes participate in nitrogen fixation?

A

Nif, nod and fix genes

78
Q

Which elements are a part of nitrogenase enzyme?

A

Mo and Fe

79
Q

Which element is the activator of RUBISCO?

A

Mg

80
Q

Which element is the activator of phosphoenol pyruvate carboxylase?

A

Mg

81
Q

Which element is the activator of alcohol dehydrogenase?

A

Zn

82
Q

Which element helps in maintaining anion-cation balance?

A

K

83
Q

Which element is involved in maintaining turgidity of cells?

A

K

84
Q

In which form do plants intake iron?

A

Fe3+

85
Q

Which elements are essential in the formation of chlorophyll?

A

Mg and Fe

86
Q

Which elements are required in photosynthesis and respiration both?

A

Mg, Fe, Mn

87
Q

Which elements does Mn compete with for uptake?

A

Fe and Mg

88
Q

Which element does Mn compete with for binding with enzyme?

A

Mg

89
Q

Toxicity of which element can inhibit calcium translocation in shoot apex?

A

Mn

90
Q

How many electrons are utilized in the fixation of one molecule of nitrogen in root nodule of plants?

A

8

91
Q

How many ATP are utilized in the fixation of one molecule of nitrogen in root nodule of plants?

A

16

92
Q

What does ammonia react with in reductive amination?

A

Alpha-ketoglutaric acid

93
Q

Which enzyme catalyses reductive amination?

A

Glutamate dehydrogenase

94
Q

Which enzyme catalyses the transamination reaction?

A

Transaminase

95
Q

Which two important amides are structural part of proteins?

A

Aspargine and glutamine

96
Q

What is nitrogen fixed as in soyabean?

A

Ureides

97
Q

Amides are transported via which vascular tissue in plants?

A

Xylem

98
Q

Ureids have a high carbon to nitrogen ratio. True/false?

A

False. Ureids have a high nitrogen to carbon ratio.