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Free download in PDF Mineral Nutrition Multiple Choice 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.
(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
(2)
Minerals are absorbed by the plants, through
[A]
Pressure flow
[B]
Diffusion
[C]
Active transport
[D]
Osmosis
(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
(5)
Critical elements are
[A]
Na, K and Ca
[B]
N, P and Mg
[C]
N, P and K
[D]
Mn, B and Mo
(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
(10)
Nodule formation of legume roots is reduced during deficiency of
[A]
Sulphur
[B]
Boron
[C]
Nitrogen
[D]
Both A and B
(11)
Internal cork of Apple/browning of Cauliflower is deficiency symptom of
[A]
Mo
[B]
B
[C]
Cu
[D]
Zn
(12)
Common free ion in the cell is
[A]
Iron
[B]
Potassium
[C]
Sulphate
[D]
Phosphate
(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
(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
(16)
Which of the following elements is necessary for translocation of sugars in plants
[A]
Iron
[B]
Molybdenum
[C]
Manganese
[D]
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
(20)
Which of the following is a mineral nutrient?
[A]
Carbon
[B]
Nitrogen
[C]
Hydrogen
[D]
Oxygen
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