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Quiz 12
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Q.1
Identify the incorrectly matched pair about mineral and its function in plants:
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a) Potassium - Opening and closing of stomata, Activation of enzymes.
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b) Magnesium - Maintenance of ribosome structure, Structure of chlorophyll.
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c) Boron - Pollen germination, Carbohydrate translocation.
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d) Molybdenum - Water splitting in photosynthesis, Nitrogen metabolism.
Explanation
Answer:(d)
Q.2
During nitrate assimilation, reduction of nitrite is performed by enzyme ........ This enzyme is ........ which contains copper and iron. Enzymes require reducing power ........ in illuminated cells. The product of nitrogen reduction is ........
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a) Nitrate reductase, Molybdoflavoprotein, ATP, nitrite.
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b) Nitrite reductase, Molybdoflavoprotein, FAD, nitrate.
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c) Nitrate reductase, Metalloflavoprotein, NADH, ammonia.
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d) Nitrite reductase, Metalloflavoprotein, NADH, ammonia.
Explanation
Answer:(d)
Q.3
Consider the following: I. Facilitation of uptake and utilization of calcium by plants. II. Cell elongation and cell differentiation. III. Nitrogen metabolism. IV. Carbohydrate translocation. V. Water splitting reaction in photosynthesis. The functions of Boron in plants will include:
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a) I, II, III, IV.
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b) I, II, IV.
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c) II, III, IV.
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d) I, III, V.
Explanation
Answer:(b)
Q.4
This steps are carried out by: 2NH3 + 3O2 → 2NO2- + 2H+ + 2H2O 2NO2- + O2 → 2NO3-
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a) Nitrosomonas and Nitrobacter.
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b) Pseudomonas and Thiobacillus.
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c) Bacillus vulgaris and Bacillus ramosus.
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d) Rhizobium and Frankia.
Explanation
Answer:(a)
Q.5
In crucifers, whip tail disease is caused due to the deficiency of;
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a) Manganese.
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b) Magnesium.
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c) Molybdenum.
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d) Iron.
Explanation
Answer:(c)
Q.6
The element which is involved in respiration, photosynthesis and union of ribosomal subunits and for chlorophyll synthesis:
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a) Magnesium.
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b) Manganese.
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c) Iron.
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d) Calcium.
Explanation
Answer:(a)
Q.7
Select the incorrect match:
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a) DNA polymerase – Mg2+.
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b) Biotin – S.
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c) PEPcase – Mn2+.
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d) Cytochrome – Fe.
Explanation
Answer:(c)
Q.8
Which one of the following is the wrong pair?
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a) Zn – Alcohol dehydrogenase.
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b) Mo – Nitrogenase.
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c) Mn – Malic dehydrogenase.
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d) Mg – Carboxylase.
Explanation
Answer:(d)
Q.9
The element which is essential for the synthesis of tryptophan and plant growth hormone auxin is:
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a) Zinc.
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b) Manganese.
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c) Molybdenum.
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d) Magnesium.
Explanation
Answer:(a)
Q.10
Which of the following mineral deficiency leads to both Chlorosis and necrosis?
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a) Magnesium and Sulphur.
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b) Iron and calcium.
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c) Magnesium and Potassium.
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d) Nitrogen and Zinc.
Explanation
Answer:(c)
Q.11
The first stable product of biological nitrogen fixation is:
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a) NH3.
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b) N2O.
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c) NO3-.
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d) NO2.
Explanation
Answer:(a)
Q.12
Reaction carried out by N2 metabolising microbes includes: 2NH3 + 3O2 → 2NO2- + 2H+ + 2H2O 2NO2- + O2 → 2NO3- Which of the following step about these reactions is incorrect?
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a) Step I is carried out by Nitrosomonas and Nitrococcus.
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b) Step II is carried out by Nitrobacter.
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c) Both Steps I and II can be called nitrification.
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d) Bacteria carrying out these steps are usually photoautotrophs.
Explanation
Answer:(d)
Q.13
The element which is required in large amounts in comparison to other micronutrients:
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a) Manganese.
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b) Iron.
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c) Copper.
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d) Boron.
Explanation
Micro-element ( micronutrient) They are those essential elements which are required by plants in quantity of less than 1 milligram or 10m mol/kg of dry matter. Micronutrients are eight in number Fe, Mn, Zn, Cu, Mo, B, Cl and Ni. Functional elements which occur in the range of micronutrients are Cobalt, Vanadium and Aluminium. Out of above four options, iron(Fe) is needed in larger quantities compared to others. Answer:(b)
Q.14
Select the mismatched among the following: (i) Zn2+ - Activates DNA polymerase. (ii) K – Helps in opening and closing of stomata. (iii) P – Phosphorylation reaction. (iv) Mn – Helps to maintain ribosome structure. (v) N – Major component of proteins.
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a) (i) only.
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b) (iv) only.
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c) (iii) and (iv) only.
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d) (i) and (iv).
Explanation
Answer:(d)
Q.15
Standards for mineral elements essentially was suggested by which scientist ?
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a) Julious Vonsachs
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b) Cornelius Von
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c) Arnon and Stout
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d) Jhon Ingen house
Explanation
Answer:(c)
Q.16
State deficiency symptoms of Mo.
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a) fruit yeild decreases
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b) fall of fruit
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c) N - deficiency appears.
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d) death of root-apex and shoot-apex.
Explanation
Answer:(c)
Q.17
Which element is required for photolysis of water during photosynthesis ?
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a) Mo
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b) Co
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c) Cu
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d) Cl
Explanation
Answer:(d)
Q.18
Boron is absorbed by plants in the form of:
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a) BO33-.
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b) B4O72-.
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c) BO34-.
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d) Both A and B.
Explanation
Answer:(d)
Q.19
During nodule formation, root hairs curl and produce a path towards cortex to carry the bacteria into cortex of root, known as:
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a) Infection thread.
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b) Epidermal hairs.
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c) Nodule thread.
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d) Root hair.
Explanation
Answer:(a)
Q.20
Read the following statements: (i) Essential elements are both macronutrients and micronutrients. (ii) Minerals which maintain cation anion balance are K and Cl. (iii) Most of the chemical fertilizers contain N, P and K. (iv) The non – mineral elements are C, H and O. (v) The inorganic elements which are obtained from the soil are called mineral elements. How many of the above statements are correct.
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a) Two.
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b) Three.
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c) Four.
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d) Five.
Explanation
Answer:(d)
Q.21
Which one of the following statement is true?
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a) Amides contain more nitrogen than amino acids.
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b) Amides contain more nitrogen than amino acids.
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c) In soyabean, export of fixed nitrogen takes place as amides.
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d) Amides contain less nitrogen than amino acids.
Explanation
Answer:(a)
Q.22
Nitrifying bacteria are:
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a) Chemoautotrophs.
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b) Chemoheterotrophs.
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c) Autotrophs.
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d) Both A and B.
Explanation
Answer:(a)
Q.23
Deficiency of which element kills terminal buds leaving a rosette effect on the plant ?
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a) Mo
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b) B
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c) Cu
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d) None
Explanation
Answer:(d)
Q.24
Formation of FAD during N2 fixation occurs during which processes ?
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a) growth and development
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b) cell division and differentiation
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c) photosynthesis and transpiration
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d) Respiration and photosynthesis
Explanation
Answer:(d)
Q.25
Which one is correct option of given Column I and Column II
Column I
Column II
1 Copper
P. Maintenance of ribosomal constitution.
2 Molybdenum
Q. Carbohydrate transpor\\\
3 Zinc
R. Nitrogen fixation
4 Magnesium
S. Activity of enzymes in respiration
5 Boron
T. Auxin synthesis
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a) 1 - S, 2 - R, 3 - P, 4 - Q, 5 - T
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b) 1 - S, 2 - R, 3 - T, 4 - P, 5 - Q
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c) 1 - R, 2 - P, 3 - S, 4 - T, 5 - Q
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d) 1 - T, 2 - S, 3 - Q, 4 - R, 5 - P
Explanation
Answer:(b)
Q.26
Which is the correct sequence of enzymes for protein synthesis during N2 fixation ?
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a) Nitrogenase → Transaminase → Glutamate dehydrogenase
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b) Glutamate dehydrogenase → Transaminase → Nitrogenase
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c) Hydrogenase → Glutamate dehydrogenase Transaminase
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d) Transaminase Nitrogenase Glutamate dehydrogenase
Explanation
Answer:(c)
Q.27
Which statement is correct option from the given statements for plasma membrance ? (i) The inner region of plasma membrane is the region within the vacuole. (ii) For ionic absorption various ionic channels are located in the plasma membrance. (iii) In Donnan equillibrium, only positive ions occurs on the inner surface of plasma membrance
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a) only ii
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b) i and ii
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c) ii and iii
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d) i, ii and iii
Explanation
Answer:(c)
Q.28
Which is the true statement for the vanadium element ?
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a) deficiency do not regulate the size of stomata.
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b) It is united in the formation of bipolar spindle during cell division.
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c) plant do not get ammonia from the soil, due to its deficiency.
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d) It plays role as structural component of vitamin Biotin and thiamin.
Explanation
Answer:(c)
Q.29
Which method of hydroponics used for raising plants in solution filled containers such as a glass, jars, buckets, tubs and water tanks ?
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a) static solution culture
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b) nutrient film technique
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c) Aeroponics
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d) tissue culture
Explanation
Answer:(a)
Q.30
Match the following:
Column I
Column II
a. Alcoholic dehydrogenase
Magnesium
b. Opening and closing of stomata
Potassium
c. PEPcase and RuBisco
Sulphur
d. Thiamine
Zinc
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a) a → 1 ; b → 4 ; c → 2 ; d → 3
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b) a → 1 ; b → 2 ; c → 3 ; d → 4
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c) a → 3 ; b → 2 ; c → 4 ; d → 1
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d) a → 4 ; b → 2 ; c → 1 ; d → 3
Explanation
Answer:(d)
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