Mineral Nutrition MCQs | Mineral Nutrition Multiple Choice Questions and Answers

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Questions
1 Major part of dry weight of a plant is derived from elements obtained from
A Soil
B Air
C Water
D Decomposing organic matter

Answer: Air
2 Minerals are absorbed by the plants, through
A Pressure flow
B Diffusion
C Active transport
D Osmosis

Answer: Active transport
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3 Magnesium is required for
A DNA replication
B RNA synthesis
C Stomatal movements
D Synthesis of chlorophyll

Answer: Synthesis of chlorophyll
4 Both nitrogen and sulphur and required by plants for
A Chlorophyll synthesis
B Enzymes
C Cell wall
D Stomatal movements

Answer: Enzymes
5 Critical elements are
A Na, K and Ca
B N, P and Mg
C N, P and K
D Mn, B and Mo

Answer: N, P and K
6 In plant mineral nutrition, elements are called macro or micro-elements depending upon their
A Relative presence in plant ash
B Relative importance in plant growth
C Relative amount required in plants
D Relative availability in soil

Answer: Relative amount required in plants
7 Tracer elements are those that are
A Required in small amount by the plant
B Radioactive and can be used to investigate a process in the plant
C First to be traced in the plant
D Present in traces in the soil solution

Answer: Radioactive and can be used to investigate a process in the plant
8 Which of the following does not operate in the carrier concept of active absorption of minerals
A Electron transport
B Contractile protein
C Protein lecithin
D Ascending water stream

Answer: Ascending water stream
9 Soil nitrate is more likely to leach than ammonium due to its
A Small size
B Negative charged
C Being useless
D Abundance

Answer: Negative charged
10 Nodule formation of legume roots is reduced during deficiency of
A Sulphur
B Boron
C Nitrogen
D Both A and B

Answer: Both A and B
11 Internal cork of Apple/browning of Cauliflower is deficiency symptom of
A Mo
B B
C Cu
D Zn

Answer: B
12 Common free ion in the cell is
A Iron
B Potassium
C Sulphate
D Phosphate

Answer: Potassium
13 Which of the following are the most abundant elements in the living cells
A C, H, S and P
B C, O, N and P
C C, H, O and N
D C, H, Mg and Ca

Answer: C, H, O and N
14 Mineral salts which are absorbed by the roots from the soil are in the form of
A Very dilute solution
B Dilute solution
C Concentrated solution
D Very concentrated solution

Answer: Very dilute solution
15 Which of the following is macronutrient
A Ca
B Mo
C Mn
D Zn

Answer: Ca
16 Which of the following elements is necessary for translocation of sugars in plants
A Iron
B Molybdenum
C Manganese
D Boron

Answer: Boron
17 Chlorosis in plants occur due to
A High sunlight intensity
B Low sunlight intensity
C Absorption of yellow pigments from the soil
D Deficiency of Mg and Fe in the soil

Answer: Deficiency of Mg and Fe in the soil
18 Those elements whose absence prevent plants from completing its life cycle are called___________
A Micro element
B Macro element
C Nonessential elements
D Essential elements

Answer: Essential elements
19 Who proposed the idea of essential mineral nutrients of the plant?
A Leonhart Fuchs
B Aristotle
C Arnon and Stout
D Carl Linnaeus

Answer: Arnon and Stout
20 Which of the following is a mineral nutrient?
A Carbon
B Nitrogen
C Hydrogen
D Oxygen

Answer: Nitrogen

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