Mineral Nutrition MCQs | Mineral Nutrition Short Questions and Answers

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Questions
41 Potassium is employed in
A Chlorophyll synthesis
B Protein synthesis
C Cementing synthesis
D Opening and closing stomata

Answer: Opening and closing stomata
42 Calcium is a component of
A Middle lamella
B Primary walls
C Secondary walls
D Chlorophyll

Answer: Middle lamella
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43 Chlorosis results from deficiency of
A Chlorine
B Sodium
C Calcium
D Magnesium

Answer: Magnesium
44 Micronutrients mainly function as
A Osmotic constituents of cell sap
B Components of important biochemicals
C Cofactors of enzymes
D Constituents of chlorophyll

Answer: Cofactors of enzymes
45 Macronutrients are elements that
A Play major role in plant nutrition
B Are required in large quantities in plants
C From large molecules in plants
D None of the above

Answer: Are required in large quantities in plants
46 Micronutrients/trace elements are those that
A Can be removed from the plant without any effect on it
B Play a minor role in plant nutrition
C Form very small molecules in plants
D Are present/required in small quantities in plants

Answer: Are present/required in small quantities in plants
47 Minerals are absorbed in the form of
A Molecules
B Ions
C Compounds
D Mixtures

Answer: Ions
48 The absorption of minerals due to difference in the electropotential gradient without use of energy i
A Active absorption
B Passive absorption
C Osmotic absorption
D None of the above

Answer: Passive absorption
49 Active absorption of minerals salts makes use of
A Ionic exchange
B Carriers
C Phosphorylation of elements
D None of the above

Answer: Carriers
50 Passive absorption of minerals salts is not dependent on
A Diffusion
B Osmosis
C Donnan equilibrium
D Ionic exchange

Answer: Osmosis
51 Absorbed minerals are transported to other parts of the plants by
A Diffusion
B Imbibitions
C Ion exchange
D Water stream

Answer: Water stream
52 Downward passage of mineral, from upper soil layers to lower soil strata is called
A Percolation
B Leaching
C Weathering
D Runaway

Answer: Leaching
53 The largest reservoir of nitrogen is
A Rocks
B Sea
C Air
D Soil

Answer: Air
54 Hydroponics is growing plants in
A Laboratory
B Phytotron
C Liquid culture medium
D Solid culture medium

Answer: Liquid culture medium
55 The enzymes required for nitrogen fixation is
A Nitrogen deaminase
B Nitrodioxidase
C Amino acid decarboxylase
D Nitrogenase

Answer: Nitrogenase
56 Which of the following is present in the core of chlorophyll molecule
A Fe
B Mg
C K
D Mn

Answer: Mg
57 Which is not an essential element for plants
A Iron
B Potassium
C Zinc
D Sodium

Answer: Sodium
58 Which of the following is deficiency symptom of magnesium?
A Chlorosis in young leaves
B Chlorosis in older leaves
C Spindly and woody stem
D Elongated stem

Answer: Chlorosis in older leaves
59 A number of minerals like Ca, Mg and K are held over the surface of clay particles because the latter are
A Negatively charged
B Positively charged
C Neutral
D Having both positive and negative residual valencies

Answer: Negatively charged

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