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Mineral Nutrition Class 11 MCQs Questions with Answers
Solving the Mineral Nutrition Multiple Choice Questions of Class 11 Biology Chapter 12 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Mineral Nutrition Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 12 Biology Class 11 and cross-check your answers during preparation.
I. Select the correct answer from the following questions:
Question 1.
Name the scientist who first showed that plants obtain minerals from the soil for their growth and development.
(a) Woodward
(b) de-Saussure
(c) Armon
(d) Stout.
Answer
Answer: (a) Woodward.
Question 2.
A mineral element is considered essential for plant if it fulfills the need for
(a) Specific symptoms
(b) Normal growth and development
(c) Direct nutrition of plant
(d) All of these
Answer
Answer: (d) All of these.
Question 3.
An element which is constituent of every enzyme and is thus essential for ail biochemical reactions in plants is
(a) Nitrogen
(b) Sulphur
(c) Phosphorus
(d) Carbon
Answer
Answer: (a) Nitrogen.
Question 4.
An element which is constituent of cholrophyll and also acts as a co-factor for various enzymes taking part in cellular respiration is
(a) Magnesium
(b) Nitrogen
(c) Carbon
(d) Iron.
Answer
Answer: (a) Magnesium.
Question 5.
Main source of nitrogen for plants is
(a) Atmoshpere
(b) Soil
(c) Nitrifying bacteria
(d) Water soluble nitrites nitrates.
Answer
Answer: (a) Atmosphere.
Question 6.
Animal and other heterotrophic organisms obtain nitrogen from
(a) Atmosphere
(b) Plants
(c) Nitrifying bacteria
(d) All of these.
Answer
Answer: (b) Plants.
Question 7.
Elements obtained by plants from the soil are known as
(a) Mineral elements
(b) Non-mineral elements
(c) Both (a) and (b)
(d) None of these.
Answer
Answer: (a) Mineral elements.
Question 8.
Elements obtained by plants from atmosphere of water are known as
(a) Mineral elements
(b) Non-mineral elements
(c) Gases
(d) Both (a) and (b)
Answer
Answer: (b) Non-mineral elements.
Question 9.
Non-mineral elements of plants are
(a) Carbon, hydrogen and sulphur
(b) Carbon, oxygen and nitrogen
(c) Sulphar, chlorine and nitrogen
(d) Carbon, hydrogen and oxygen.
Answer
Answer: (d) Carbon, hydrogen and oxygen.
Question 10.
An element of plants which is derived both from mineral and non-mineral resources is
(a) Carbon
(b) Sulphur
(c) Nitrogen
(d) Hydrogen.
Answer
Answer: (c) Nitrogen.
Question 11.
The technique of growing the plants by placing their roots in nutrient solution instead of growing in soil is called
(a) Water culture
(b) Hydroponics
(c) Soilless culture
(d) All of these.
Answer
Answer: (d) All of these.
Question 12.
Phosphorus is very essential for
(a) Photosynthesis and respiration as carbohydrates taking part in different reactions react in phosphorylated form
(b) It is constituent of NADP which plays crucial role in light reaction of photosynthesis.
(c) Helps in storing chemical energy in glucose.
(d) All of these.
Answer
Answer: (d) All of these.
Question 13.
Loss of chloropvll that leads to yellowing of entire leaf or part of it is called
(a) Chlorosis
(b) Necrosis
(c) Abscission
(d) Mottling
Answer
Answer: (a) Chorosis
Question 14.
Appearance of patches of green and non-green areas on the leaves are called
(a) Necrosis
(b) Chlorosis
(c) Curling
(d) Mottling.
Answer
Answer: (d) Mottling.
Question 15.
Localised death of tissue of leaf is called
(a) Chlorosis
(b) Necrosis
(c) Mottling
(d) Dieback.
Answer
Answer: (b) Necrosis.
Question 16.
The yellow disease in tea plant occurs due to
(a) Deficiency of sulphur
(b) Deficiency of nitrogen
(c) Excess of sulphur
(d) None of these
Answer
Answer: (a) Deficiency of sulphur.
Question 17.
Which one is not related with plant ash?
(a) Trace element
(b) Essential elements
(c) Nitrogen
(d) Mineral elements.
Answer
Answer: (c) Nitrogen.
Question 18.
Deficiency of boron in plants causes disease
(a) Corky spot of apples
(b) Heart rot of sugar beet
(c) Top sickness of tobacco
(d) All of these.
Answer
Answer: (d) All of these
Question 19.
In nitrogen cycle, the nitrifying bacteria
(a) convert ammonia into nitrogen
(b) Fix atmospheric nitrogen
(c) Convert amino acids into ammonia
(d) Convert ammonia into nitrates.
Answer
Answer: (d) Convert ammonia into nitrates.
Question 20.
The most common symbiotic nitrogen fixing organism/s is
(a) Azotobacter
(b) Closteridium
(c) Rhizobium leguminaris
(d) Chlorobium.
Answer
Answer: (c) Rhizobium leguminaris
Question 21.
In non-leguminous plants like Casurina and Alnus symbiotic N fixing bacteria occur in their roots like
(a) Frankia
(b) Closteridium
(c) Rhizobium
(d) Azotobacter.
Answer
Answer: (a) Frankia.
Question 22.
The main source of nitrogen nutrition in plants is
(a) Nitrogen in the atmosphere
(b) Nitrogen fixing bacteria
(c) Mineral nitrogen
(d) All of these.
Answer
Answer: (a) Nitrogen in the atmosphere.
Question 23.
The mineral uptake occurs in plants
(a) Against concentration gradient
(b) Along concentration gradient
(c) Both (a) and (b)
(d) None of these.
Answer
Answer: (a) Against concentration gradient.
Question 24.
The most common mineral element which becomes deficient in agricultural soils is
(a) Phosphorus
(b) Nitrogen
(c) Potassium
(d) All of these.
Answer
Answer: (d) All of these.
Question 25.
Biological nitrogen fixation involves reduction of N2 by addition of
(a) A pair of hydrogen atoms
(b) A pair of CO2 molecules
(c) A pair of oxygen atoms
(d) None of these.
Answer
Answer: (a) A pair of hydrogen atoms.
II. Fill in the blanks
Question 1.
Julius Sachs technique of growing plants in a nutrient solution is known as ………….
Answer
Answer: hydroponics
Question 2.
The element must be …………. necessary for supporting normal growth and reproduction.
Answer
Answer: obsolutely
Question 3.
The requirement of the element …………. and not ………….. by another element.
Answer
Answer: must be specific, replaceable
Question 4.
The element must be ………….. in the metabolism of the plant.
Answer
Answer: directly involved
Question 5.
………… must generally be present in plant tissues in concentration of 1 to 10 mg/L of dry matter.
Answer
Answer: Macronutrients
Question 6.
…………. or trace elements, are needed in very small amount (equal to or less than 0.1 mg/L of dry matter).
Answer
Answer: Micronutrients
Question 7.
……….. is the mineral element required by plants in the greatest amount.
Answer
Answer: Nitrogen
Question 8.
………… is absorbed by the plants from soil in the form of phosphate ions (either as H2 PO–4 or HPO2-4).
Answer
Answer: Phosphorus
Question 9.
………… is absorbed as potassium ion (K+)
Answer
Answer: Potassium
Question 10.
Plant absorbs …………. from the soil in the form of calcium ions (Ca2+).
Answer
Answer: calcium
Question 11.
Magnesium activates the enzymes of respiration, photosynthesis and are involved in the synthesis of ………. and …………
Answer
Answer: DNA, RNA
Question 12.
Sulphur is present in two amino acids ………… and ………….. and is the main constituent of several coenzymes, vitamins and ferredoxin.
Answer
Answer: Cysteine, methionine
Question 13.
Plants obtain ……….. in the form of ferric ions (Fe3+).
Answer
Answer: iron
Question 14.
Manganese activates many enzymes involved in ……….., ………… and ………….
Answer
Answer: photosynthesis, respiration, nitrogen metabolism
Question 15.
Copper is essential for the overall …………. in plants. Like iron
Answer
Answer: metablism
III. Mark the statement true (T) or false (F)
Question 1.
Chlorine is absorbed in the form of chloride anion (Cl–).
Answer
Answer: True.
Question 2.
Boron is required for uptake and utilisation of Ca2+, membrane functioning, pollen germination, cell elongation, cell differentiation and carbohydrate translocation.
Answer
Answer: True.
Question 3.
Plants obtain it in the form of molybdate ions (MoO22+).
Answer
Answer: True.
Question 4.
The concentration of the essential element below which plant growth is retarded is termed as critical concentration.
Answer
Answer: True.
Question 5.
The toxicity symptoms are very easy to identify.
Answer
Answer: False.
Question 6.
The process of conversion of nitrogen (N2) to ammonia is termed as nitrogen fixation.
Answer
Answer: True.
Question 7.
Ammonia is second oxidised to nitrite by the bacteria Nitrosomonas and/or Nitrococcus.
Answer
Answer: False.
Question 8.
Reduction of nitrogen to ammonia by living organisms is called symbiotic nitrogen fixation.
Answer
Answer: False.
Question 9.
Both Rhizobium and Frankia are free-living in soil, but as symbionts, can fix the atmospheric nitrogen.
Answer
Answer: True.
Question 10.
At physiological pH, the ammonia is protonated to form NH+4 (ammonium) ion.
Answer
Answer: True.
Question 11.
Glutamic acid is the main amino acid from which the transfer of NH2</sub, the amino group takes place and other amino acids are formed through transamination.
Answer
Answer: True.
Question 12.
Majority of the minerals that are essential for the growth and development of plant become available to roots due to weathering and breakdown of rocks.
Answer
Answer: True.
Question 13.
Mineral salts are translocated through xylem along with the ascending stream of water, which is pulled up through the plant by transpirational pull.
Answer
Answer: True.
Question 14.
Any mineral ion concentration in tissues that reduces the dry weight of tissues by about 80 percent is considered toxic.
Answer
Answer: False.
Question 15.
The basic needs of all living organisms are essentially the some. They require macromolecules, such as carbohydrates, proteins and fats, and minerals for their growth and developments..
Answer
Answer: True.
IV. Match the items of column I with the items of column II
| Column I | Column II |
| (a) Hydroponics. | 1. Macronutrients |
| (b) Iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel. | 2. NO2 or NO4. |
| (c) Potassium | 3. In plants, this is required in more abundant quantities in meristematic tissues, buds, leaves and root tips. |
| (d) Nitrogen is absorbed mainly as NO3 though some are also taken up as | 4. Micronutrients |
| (e) Carbon, hydrogen, Oxygen, nitrogen, phosphorous, sulphur, potassium, calcium and magnesium. | 5. The technique of growing plants in a nutrient solution. |
| (f) It is an important constituent of proteins involved in the transfer of electrons like ferredoxih and cytochromes. | 6. This symptom is caused by the deficiency of elements N, K, Mg, S Fe, Mn, Zn |
| (g) Chlorosis is the loss of chlorophyll leading to yellowing in leaves. | 7. Flux |
| (h) The movement of ions is usually called | 8. Iron |
| (i) The process of conversion of nitrogen (N2) to ammonia is termed as | 9. Fate of ammonia. |
| (j) Rhizobium | 10. Transamination |
| (k) At physiological pH, the ammonia is protonated to from NH+4 (ammonium) ion. | 11. It is absorbed in the form of chloride onion (Cl–) |
| (l) It involves the transfer of amino group from one amino acid to the keto group of a keto acid. | 12. Zinc. |
| (m) It is also needed in the synthesis of auxin. | 13. nitrogen- fixation. |
| (n) Chlorine | 14. Symbiotic biological nitrogen fixation. |
| (o) Potassium plays an important role in the | 15. opening and closing of stomata. |
Answer
Answer:
| Column I | Column II |
| (a) Hydroponics. | 5. The technique of growing plants in a nutrient solution. |
| (b) Iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel. | 4. Micronutrients |
| (c) Potassium | 3. In plants, this is required in more abundant quantities in meristematic tissues, buds, leaves and root tips. |
| (d) Nitrogen is absorbed mainly as NO3 though some are also taken up as | 2. NO2 or NO4. |
| (e) Carbon, hydrogen, Oxygen, nitrogen, phosphorous, sulphur, potassium, calcium and magnesium. | 1. Macronutrients |
| (f) It is an important constituent of proteins involved in the transfer of electrons like ferredoxih and cytochromes. | 8. Iron |
| (g) Chlorosis is the loss of chlorophyll leading to yellowing in leaves. | 6. This symptom is caused by the deficiency of elements N, K, Mg, S Fe, Mn, Zn |
| (h) The movement of ions is usually called | 7. Flux |
| (i) The process of conversion of nitrogen (N2) to ammonia is termed as | 13. nitrogen- fixation. |
| (j) Rhizobium | 14. Symbiotic biological nitrogen fixation. |
| (k) At physiological pH, the ammonia is protonated to from NH+4 (ammonium) ion. | 9. Fate of ammonia. |
| (l) It involves the transfer of amino group from one amino acid to the keto group of a keto acid. | 10. Transamination |
| (m) It is also needed in the synthesis of auxin. | 12. Zinc. |
| (n) Chlorine | 11. It is absorbed in the form of chloride onion (Cl–) |
| (o) Potassium plays an important role in the | 15. opening and closing of stomata. |
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