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Biology NEET 2023 > XI: Chapter 12- Mineral Nutrition > Flashcards

XI: Chapter 12- Mineral Nutrition Flashcards

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
Loss of apical dominance and appearance of bushy habit in plants occurs due to the deficiency of
K
26
Cotton rust occurs due to the deficiency of
K
27
Deficiency of which element can lead to stunted growth
Ca
28
Curling of younger leaves occurs due to the deficiency of
Ca
29
Black heart of celery occurs due to the deficiency of
Ca
30
Marginal curling in leaves occurs due to the deficiency of
Mg
31
Interveinal chlorosis occurs due to the deficiency of
Mg, Fe, Mn
32
Sand drown of tobacco occurs due to the deficiency of
Mg
33
Chlorosis of younger leaves occurs due to the deficiency of
Sulphur
34
Reduced nodulation in legumes occurs due to the deficiency of
S, B
35
Tea yellow diseasse occurs due to the deficiency of
Sulphur
36
Development of an extensive root system is a symptom of deficiency of sulphur. True/false
True
37
Interveinal chlorosis first in older leaves occurs due to the deficiency of
Mg
38
Interveinal chlorosis first in younger leaves occurs due to the deficiency of
Iron
39
Green netting of citrus occurs due to the deficiency of
Fe
40
Grey specks of oat occur due to the deficiancy of
Mn
41
Marsh spot disease in pea occurs due to the deficiency of
Mn
42
Little leaf of brinjal is caused by the deficiency of
Zn
43
Kharia disease if rice is caused by the deficiency of
Zn
44
Rosette formation of leaves and leaf malformation occurs due to the deficiency of
Zn
45
White bud of crucifers is caused due to the deficiency of
Zn
46
White tip of maize is caused due to the deficiency of
Zn
47
Dieback disease is caused due to the deficiency of
Cu
48
Reclamation disease is caused due to the deficiency of
Cu
49
Blackening of potato tuber is caused due to the deficiency of
Cu
50
Brown heart of turnip is caused due to the deficiency of
B
51
Heart rot of sugarbeet is caused due to the deficiency of
B
52
Hollow stem of cauliflower is caused due to the deficiency of
B
53
Loosening of inflorescence of cauliflower is caused due to the deficiency of
Mo
54
Whiptail of cauliflower is caused due to the deficiency of
B
55
Bronze colour of leaves is caused due to the deficiency of
Cl
56
Abscission of flowers is caused due to the deficiency of which elements?
Cl, N, S, Mo
57
Deficiency of N, K and Mg are first seen in which parts of the plant?
Olderleaves
58
Inhibition of cell division occurs due to the deficiency of which elements?
N, K, S, Mo
59
Toxic concentration is that concentration of mineral element in plants which reduces the weight of the tissues by
10%
60
The appearance of brown spots surrounded chlorotic veins in plants signifies
Mn toxicity
61
Excess of Mn may induce the deficiency of
Mg and Ca
62
How are elements absorbed in plants in the first phase?
Passively
63
How are elements absorbed in the second phase in plants?
Actively
64
Which element is called the most critical element in plants?
Nitrogen
65
What is diazotrophy?
Biological nitrogen fixation
66
Does Rhodospirillum fix nitrogen aerobically or anaerobically?
Anaerobically
67
Does Bacillus fix nitrogen aerobically or anaerobically?
Anaerobically
68
Does azotobacter fix nitrogen aerobically or anaerobically?
Aerobically
69
Does beijernickia fix nitrogen aerobically or anaerobically?
Aerobically
70
Which symbiotic bacteria is found in the roots of Alnus?
Frankia
71
Which bacteria help in ammonification of atmospheric nitrogen?
Bacillus
72
Nitrites are formed by which bacteria?
Nitrococcus, nitrosomonas
73
Nitrates are formed by which bacteria?
Nitrocysits and nitrobacter
74
Which bacteria cause denitrification?
Thiobacillus and Pseudomonas
75
What is the role of nitrate reductase?
Conversion of nitrates into ammonia
76
In transammination, amino group of one amino acid is transfered to
Keto group of another amino acid
77
Which genes participate in nitrogen fixation?
Nif, nod and fix genes
78
Which elements are a part of nitrogenase enzyme?
Mo and Fe
79
Which element is the activator of RUBISCO?
Mg
80
Which element is the activator of phosphoenol pyruvate carboxylase?
Mg
81
Which element is the activator of alcohol dehydrogenase?
Zn
82
Which element helps in maintaining anion-cation balance?
K
83
Which element is involved in maintaining turgidity of cells?
K
84
In which form do plants intake iron?
Fe3+
85
Which elements are essential in the formation of chlorophyll?
Mg and Fe
86
Which elements are required in photosynthesis and respiration both?
Mg, Fe, Mn
87
Which elements does Mn compete with for uptake?
Fe and Mg
88
Which element does Mn compete with for binding with enzyme?
Mg
89
Toxicity of which element can inhibit calcium translocation in shoot apex?
Mn
90
How many electrons are utilized in the fixation of one molecule of nitrogen in root nodule of plants?
8
91
How many ATP are utilized in the fixation of one molecule of nitrogen in root nodule of plants?
16
92
What does ammonia react with in reductive amination?
Alpha-ketoglutaric acid
93
Which enzyme catalyses reductive amination?
Glutamate dehydrogenase
94
Which enzyme catalyses the transamination reaction?
Transaminase
95
Which two important amides are structural part of proteins?
Aspargine and glutamine
96
What is nitrogen fixed as in soyabean?
Ureides
97
Amides are transported via which vascular tissue in plants?
Xylem
98
Ureids have a high carbon to nitrogen ratio. True/false?
False. Ureids have a high nitrogen to carbon ratio.

Biology NEET 2023 (39 decks)

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