MCQ Questions for Class 11 Biology Chapter 12 Mineral Nutrition 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 PO4 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 IColumn II
(a) Hydroponics.1. Macronutrients
(b) Iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel.2. NO2 or NO4.
(c) Potassium3. 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 as4. 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 called8. Iron
(i) The process of conversion of nitrogen (N2) to ammonia is termed as9. Fate of ammonia.
(j) Rhizobium10. 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) Chlorine14. Symbiotic biological nitrogen fixation.
(o) Potassium plays an important role in the15. opening and closing of stomata.
Answer

Answer:

Column IColumn 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) Potassium3. 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 as2. 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 called7. Flux
(i) The process of conversion of nitrogen (N2) to ammonia is termed as13. nitrogen- fixation.
(j) Rhizobium14. 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) Chlorine11. It is absorbed in the form of chloride onion (Cl)
(o) Potassium plays an important role in the15. opening and closing of stomata.

 


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