Please refer to MCQ Questions Chapter 12 Mineral Nutrition Class 11 Biology with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 11 Biology issued for the current academic year. We have provided MCQ Questions for Class 11 Biology for all chapters on our website. Students should learn the objective based questions for Chapter 12 Mineral Nutrition in Class 11 Biology provided below to get more marks in exams.
Chapter 12 Mineral Nutrition MCQ Questions
Please refer to the following Chapter 12 Mineral Nutrition MCQ Questions Class 11 Biology with solutions for all important topics in the chapter.
MCQ Questions Answers for Chapter 12 Mineral Nutrition Class 11 Biology
Question- Which of the following can fix atmospheric nitrogen ?
(d) Anabaena75. Biological nitrogen fixation is the
(a) reduction of nitrogen to ammonia by living organisms.
(b) oxidation of nitrogen to ammonia by living organism.
(c) conversion of nitrogen to ammonia by UV radiation.
(d) conversion of ammonia to nitrogen by electrical discharge.
Question- A small aquatic plant was put in each of the petridishes – X, Y & Z, containing different culture solutions. After six weeks the plant in dish X had the same number of leaves as it had previously & were all small and yellowish. Plant in dish Y had more leaves of normal size and dark green colour. Plants in dish Z had more leaves of normal size but very pale. Which of the following show the element missing in the culture?
X Y Z
(a) Magnesium Phosphorus Nitrogen
(b) Phosphorus Magnesium Nitrogen
(c) Phosphorus Nitrogen Magnesium
(d) Magnesium Nitrogen Phosphorus
Question- Match the column-I with column-II and choose the correct option.
A. P I. Found in some amino acids
B. S II. All phosphorylation reaction
C. I III. Not important for plants
D. Mn IV. Required for photolysis of water
(a) A – II, B – I, C – III, D – IV
(b) A – I, B – II, C – III, D – IV
(c) A – I, B – III, C – IV, D – II
(d) A – II, B – III, C – I, D – IV
Question- The deficiencies of micronutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most,both photosynthetic and mitochondrial electron transport?
(a) Co, Ni, Mo
(b) Ca, K, Na
(c) Mn, Co, Ca
(d) Cu, Mn, Fe
Question- Which of the following is the mismatched pair?
Mineral Form that is
elements absorbed by plant
(a) Nitrogen NO3–
(b) Phosphorus H2PO4–
(c) Sulphur H2SO4
(d) Iron Fe3+
Question- Which of the following element is involved in plants for protein synthesis?
Question- In plant nutrition, elements are classified as major or minor nutrients depending on
(a) their availability in the soil.
(b) their relative production in the ash obtained after burning the plants.
(c) the relative amounts required by the plants.
(d) their relative importance in plant growth.
Question- The term critical concentration means
(a) essential element concentration below which plant remains in the vegetative phase.
(b) essential element concentration below which the plant growth is retarded.
(c) essential element concentration above which the plant growth is stunted.
(d) non-essential element concentration below which plant growth is retarded.
Question-At physiological pH, for the formation of ammonium ion,ammonia is
Question- In an active process, the entry or exit of ions to and from the symplast requires
(b) cyclic AMP
Question- Legume’s roots have swellings called nodules that
(a) produce antibiotics that protect the plant from soil bacteria.
(b) provide a steady supply of sugar to the host plant.
(c) increases the surface area for water uptake.
(d) contain nitrogen-fixing bacteria.
Question- Nitrogen fixation by organisms requires conditions that are
(c) saturated with sunlight
(d) free of water
Question- Which of the following bacteria is correctly matched with their function ?
A. Nitrosomonas – Nitrite to nitrate
B. Thiobacillus – Dentrification
C. Nostoc – Free-living nitrogen-fixer
D. Azotobacter – Anaerobic nitrogen-fixer
(a) A and B
(b) C and D
(c) B and C
(d) B and D
Question- Some bacteria such as ‘X’ and ‘Y’ occur in soil which reduce nitrate to nitrogen by the process of ‘Z’. Identify ‘X’, ‘Y’ and ‘Z’
(a) ‘X’-Nitrogen, ‘Y’-Pseudomonas, ‘Z’-Ammonification
(b) ‘X’-Nitrosomonas, ‘Y’-Thiobacillus, ‘Z’-Ammonification
(c) ‘X’-Pseudomonas, ‘Y’-Thiobacillus, ‘Z’-Nitrification
(d) ‘X’-Pseudomonas, ‘Y’-Thiobacillus, ‘Z’-Dentrification
Question- Which of the following is correct set of micronutrient for plants?
(a) Mg, Si, Fe, Cu, Ca
(b) Cu, Fe, Zn, B, Mn
(c) Mg, Fe, Zn, B, Mn
(d) Mo, Zn, Cl, Mg, Ca
Question- Plants absorb nitrogen from soil mainly in the form of
(b) nitric acid
Question- Which of the following is an anaerobic N2 fixing bacterium?
Question- Match column-I and Column-II and choose the correct option given below the columns.
A. Calcium I. Required for ionic- balance.
B. Boron II. Essential for constitution of nucleic acid
C. Phosphorus III. Required for absorption of calcium.
D. Chlorine IV. Required to activate respiratory enzyme.
E. Manganese V. Required for synthesis of mitotic spindle.
(a) A – 1; B – 2; C – 3; D – 4; E – 5
(b) A – 5; B – 4; C – 3; D – 2; E – 1
(c) A – 4; B – 1; C – 5; D – 3; E – 2
(d) A – 5; B – 3; C – 2; D – 1; E – 4
Question- Which one of the following elements is not an essential micronutrient for plant growth?
Question- An important essential element which is required by plants in the greatest amount is
Question- Which of the following bacteria can fix nitrogen for plants such as clover and beans ?
Question- All are free-living nitrogen fixers except
Question- Which of the following expression describes nitrogen fixation?
(a) N2 + 3H2 → 2NH3
(b) 2NH+ 4+ 2O2 + 8e– → N2 + 4H2O
(c) 2NH3 → N2 + 3H2
(d) 2N2 + glucose → 2 amino acids
Question- Which one of these do plants require for the formation of adenosine triphosphate?
(a) N, Cu
(b) N, Ca
(c) N, P
(d) N, K
Question- In glycolysis, glucose molecule is converted into:
(c) Acetyl CoA
(d) Pyruvic acid
Question- Which of the following is a free living aerobic nonphotosynthetic nitrogen-fixer?
Question- Plant absorbs nitrogen from the soil in the form of
Question- The most abundant gas in our atmosphere cannot be utilized by plants directly in its atmospheric form and is,therefore, captured by certain bacteria that live symbiotically in the nodules of roots. Identify the gas?
Question- Find the incorrectly matched pair.
(a) Rhizobium → Alfalfa
(b) Frankia → Alnus
(c) Rhodospirillum → Aerobic
(d) Bacillus → Free – living
Question- In plants a common symptom caused by deficiencies of Cu, K, Ca and Mg is the
(a) formation of anthocyanin.
(b) bending of leaf tip.
(c) poor development of vasculature.
(d) appearance of dead necrotic tissues.
Question- A boy notices that the young leaves of his tomato plants are very yellow. Deficiency of which of the following nutrient does this suggest ?
Question- Which of the following is an incorrect match of essential element and function?
(a) Manganese – Structural component of chlorophyll.
(b) Calcium – Component of the middle lamella.
(c) Zinc – Enzyme activator.
(d) Iron – Component of ferredoxin.
Question- Which of the following groups contain no species that are able to fix nitrogen ?
(a) Cyanobacteria in the ocean and fresh water.
(b) Soil bacteria including Rhizobium.
(c) Cyanobacteria in lichens.
(d) Aerobic bacteria in the genera Bacillus and Pseudomonas.
Question- Leghaemoglobin helps in
(a) nitrogen fixation
(b) protecting nitrogenase from O2
(c) destroys bacteria
(d) transport of food in plants
Question- The minerals involved in the synthesis of DNA and RNA,for maintenance of the turgidity of cells and for the activation of the enzyme catalase are respectively
(a) potassium, magnesium, chlorine
(b) sulphur, potassium, iron
(c) phosphorus, potassium, chlorine
(d) magnesium, potassium, iron
Question- Minerals are known to enter the plant root by means of a number of mechanisms, including all except one of the following. Which one of the following is a mechanism for moving minerals into roots?
(a) Foliar feeding
(b) Active transport
(c) Proton (H+) pump
(d) Cation exchange
Question- Which element plays an important role in nitrogen fixation?
Question- A gardner purchases a commercial fertilizer. The label says that it is 10-20-10. This label refers to the
(a) percentage of nitrogen, phosphate and potassium.
(b) percentage of nitrogen, carbon and oxygen.
(c) rate at which nitrogen is released from the fertilizer.
(d) ratio of organic to inorganic matter in the fertilizer.
Question- Which of the following is the mismatched pair? Mineral elements Form that is absorbed by plant
(a) Nitrogen NO3–
(b) Phosphorus H2PO4–
(c) Sulphur H2SO4
(d) Iron Fe3+
Question- Which of the following is an INCORRECT match of essential element and function?
(a) Manganese – structural component of chlorophyll.
(b) Calcium – component of the middle lamella.
(c) Zinc – enzyme activator.
(d) Iron – component of ferredoxin.
Question- N2 + 8e– + 8H+ + 16 ATP → 2NH4 + H2 + 16ADP + 16Pi
The above equation refers to
(c) nitrogen fixation
In the following questions, a statement of Assertion is followed by a statement of Reason.
(a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
(b) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.
Question- Assertion : Nitrogen is the essential nutrient element requird by plants in the greatest amount.
Reason : Nitrogen is absorbed mainly as NO3– though some are also taken up NO2 – or NH4 +
Question-Assertion : Deficiency of sulphur causes chlorosis in plants.
Reason : Sulphur is a constituent of chlorophyll, protein and nucleic acids.
Question- Assertion : Ammonia is first oxidized to nitrate by the bacteria Nitrosomonas or Nitrococcus.
Reason : These nitryfying Bacteria are chemoheterotrophs .
Question- Assertion : Macromtrients are generally present in plant tissues in large amounts (in excess of 10 mmole kg-1 of dry matter)
Reason : Macronutrient includes iron manganese copper, molybdenum, zinc, boron, chlorine and nickel
Question- Assertion : Chlorosis is the loss of chlorophyll leading to yellowing of leaves.
Reason : This symptom is caused by the deficiency of elements N,K, Mg, S, Fe and Mo.
These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following five responses.
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
(c) If the Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.
Question- Assertion : Plants absorb sulphur in the form of sulphate ions.
Reason : Sulphur bacteria are required for the formation of sulphate.
Question- Assertion : Plants lack excretory organs.
Reason : Plant usually absorb essential nutrients and lead a passive life.
We hope you liked the above provided MCQ Questions Chapter 12 Mineral Nutrition Class 11 Biology with solutions. If you have any questions please ask us in the comments box below.