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Free download in PDF Mineral Nutrition Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
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
43
Chlorosis results from deficiency of
[A]
Chlorine
[B]
Sodium
[C]
Calcium
[D]
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
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
50
Passive absorption of minerals salts is not dependent on
[A]
Diffusion
[B]
Osmosis
[C]
Donnan equilibrium
[D]
Ionic exchange
51
Absorbed minerals are transported to other parts of the plants by
[A]
Diffusion
[B]
Imbibitions
[C]
Ion exchange
[D]
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
53
The largest reservoir of nitrogen is
[A]
Rocks
[B]
Sea
[C]
Air
[D]
Soil
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
56
Which of the following is present in the core of chlorophyll molecule
[A]
Fe
[B]
Mg
[C]
K
[D]
Mn
57
Which is not an essential element for plants
[A]
Iron
[B]
Potassium
[C]
Zinc
[D]
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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