We have compiled the NCERT MCQ Questions for Class 11 Biology Chapter 12 Mineral Nutrition with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 11 Biology with Answers on a daily basis and score well in exams. Refer to the Mineral Nutrition Class 11 MCQs Questions with Answers here along with a detailed explanation.
Mineral Nutrition Class 11 MCQs Questions with Answers
Question 1.
The nitrogen exists as two nitrogen atoms joined by
(a) Di covalent bonds
(b) tetra covalent bonds
(c) triple covalent bonds
(d) monocovalent bond
Answer
Answer: (c) triple covalent bonds
Question 2.
Biological nitrogen fixation was discovered by
(a) Gericke
(b) Nehar and Sakmann
(c) Liebig
(d) Winograndsky
Answer
Answer: (d) Winograndsky
Question 3.
The enzyme involved in biological nitrogen fixation are
(a) Carboxylase
(b) Oxygenase
(c) Dehydrogenase
(d) Nitrogenase
Answer
Answer: (d) Nitrogenase
Question 4.
The requirement of micro nutrient are always low if the concentration increases it leads to
(a) deficiency symptoms
(b) Cell differentiation
(c) Toxicity
(d) Cell elongation
Answer
Answer: (c) Toxicity
Question 5.
Which one of the following organism help in absorption of phosphorus from soil by plants
(a) Glomus
(b) Frankia
(c) Rhizobium
(d) Anabaena
Answer
Answer: (a) Glomus
Question 6.
Analysis of xylem sap shows
(a) presence of enzymes
(b) presence of organic matter
(c) presence of nutrients
(d) presence of mineral salts
Answer
Answer: (d) presence of mineral salts
Question 7.
Conversion of ammonia into nitrates through Nitrosomonas is called
(a) Nitrogen fixation
(b) Denitrification
(c) Ammonification
(d) Nitrification
Answer
Answer: (d) Nitrification
Question 8.
In cabbages, ‘Whiptail’ is a characteristic deficiency disease. It is caused by the deficiency of
(a) Chlorine
(b) Molybdenum
(c) Magnesium
(d) Boron
Answer
Answer: (b) Molybdenum
Question 9.
Minerals present in the soil are absorbed by
(a) stems
(b) leaf
(c) roots
(d) buds
Answer
Answer: (c) roots
Question 10.
Phosphorous is a constituent of A. Cell membrane B. Nucleic acids C. cellwall D. chlorophyll
(a) C and D
(b) A and B
(c) B and C
(d) D and A
Answer
Answer: (b) A and B
Question 11.
Deficiency of which of the following can cause yellowing of intravenous regions of leaves?
(a) Potassium
(b) Calcium
(c) Phosphorus
(d) Copper
Answer
Answer: (a) Potassium
Question 12.
The middle lamella mainly contains
(a) Na
(b) Mg
(c) K
(d) Ca
Answer
Answer: (d) Ca
Question 13.
Function of laghaemoglobin during biological nitrogen fixation in root nodules of legumes is to
(a) Protect nitrogenase from Oxygen
(b) Transport Oxygen for nitrogenase activity
(c) Convert ammonium into nitrite
(d) Convert N2 to NH2
Answer
Answer: (a) Protect nitrogenase from Oxygen
Question 14.
Which is essential for root hair growth?
(a) Zn
(b) Mo
(c) Ca
(d) S
Answer
Answer: (c) Ca
Question 15.
Which one of the following microbes forms a symbiotic association with plants and helps them in their nutrition.
(a) Aspergillus
(b) Trichoderma
(c) Glomus
(d) Azotobacter
Answer
Answer: (c) Glomus
Question 16.
Which one of the following is a wrong statement?
(a) Greenhouse effect is a natural Phenomenon
(b) Eutrophication is a natural phenomenon in freshwater bodies
(c) Most of the forests have been lost in tropical areas
(d) Ozone in upper part of atmosphere is harmful to animals
Answer
Answer: (d) Ozone in upper part of atmosphere is harmful to animals
Question 17.
Influx and efflux of H+ ions inside the cell change the
(a) Na+ ion concentration
(b) Nitrate concentration
(c) pH
(d) Permeability of plasma membrane
Answer
Answer: (c) pH
Question 18.
Which of the following is not an essential element?
(a) Zinc
(b) Iodine
(c) Iron
(d) Manganese
Answer
Answer: (b) Iodine
Question 19.
The ion which activates many enzymes involved in photosynthesis, respiration, nitrogen metabolism is
(a) zinc ions
(b) manganous ions
(c) sodium ions
(d) potassium ions
Answer
Answer: (b) manganous ions
Question 20.
An immobile element in plants is
(a) Calcium
(b) Potassium
(c) Nitrogen
(d) Phosphorus
Answer
Answer: (a) Calcium
Question 21.
Denitrification is carried out by
(a) Nitrosomonas
(b) Pseudomonas
(c) Nitrobacter
(d) Nitrococcus
Answer
Answer: (b) Pseudomonas
Question 22.
In plant, nitrate is reduced to ammonia state in two steps. In second step electrons are donated by
(a) Nitrite reductase
(b) Cytochrome b5
(c) Ferredoxin
(d) Nitrate reductase
Answer
Answer: (c) Ferredoxin
Question 23.
The most abundant element found in plants is
(a) Carbon
(b) Manganese
(c) Nitrogen
(d) Iron
Answer
Answer: (a) Carbon
Question 24.
Which among the following is NOT the source of nitrogen?
(a) Automobile exhaust
(b) Xylem
(c) Industrial combustion
(d) Forest fire
Answer
Answer: (b) Xylem
Question 25.
Non-symbiotic nitrogen fixing prokaryote is
(a) Frankia
(b) Acetobacter
(c) Rhizobium
(d) Azotobacter
Answer
Answer: (d) Azotobacter
Question 26.
It is the technique of growing plants in above-ground strands provided with fine mist of normal solution.
(a) Chemoponics
(b) Hydroponics
(c) Hygroponics
(d) Aeroponics
Answer
Answer: (d) Aeroponics
Question 27.
Choose the odd one out among the following
(a) Pseudomonas
(b) Rhizobium
(c) Azotobacter
(d) Bacillus anabaena
Answer
Answer: (a) Pseudomonas
Question 28.
Nitrogenase enzyme converts
(a) Nitrate and nitrite into nitrogen
(b) Atmospheric nitrogen into ammonia
(c) Ammonia into nitrate and nitrite
(d) Nitrate into nitrite
Answer
Answer: (b) Atmospheric nitrogen into ammonia
Question 29.
That essential element which occur in 1-10 mg/g of dry matter are
(a) Macronutrients
(b) Micronutrients
(c) Toxic elements
(d) Beneficial nutrients
Answer
Answer: (a) Macronutrients
Question 30.
Which one of the following mineral elements plays an in biological nitrogen fixation?
(a) Copper
(b) Manganese
(c) Zinc
(d) Molybdenum
Answer
Answer: (d) Molybdenum
Question 31.
Which one of the following is a micronutrient in plants?
(a) Potassium
(b) Magnesium
(c) Calcium
(d) Zinc
Answer
Answer: (d) Zinc
Question 32.
That element which helps in electron transport in the process of photosynthesis
(a) Zinc
(b) Chlorine
(c) Manganese
(d) Boron
Answer
Answer: (c) Manganese
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