MCQ Questions for Class 11 Biology Chapter 12 Mineral Nutrition with Answers

Check the below NCERT MCQ Questions for Class 11 Biology Chapter 12 Mineral Nutrition with Answers Pdf free download. MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. We have provided Mineral Nutrition Class 11 Biology MCQs Questions with Answers to help students understand the concept very well.

Class 11 Biology Chapter 12 MCQ With Answers

Biology Class 11 Chapter 12 MCQs On Mineral Nutrition

Mineral Nutrition Class 11 MCQ Question 1.
In plants, a common symptom caused by deficiency of P, K, Ca and Mg is the
(a) bending of leaf tip
(b) formation of anthocyanins
(c) poor development of vasculature
(d) appearance of dead necrotic tissue

Answer

Answer: (d) appearance of dead necrotic tissue

Mineral Nutrition MCQ With Answers Question 2.
Function of zinc is
(a) Closing of stomata
(b) Biosynthesis of 3-IAA
(c) Synthesis of chlorophyll
(d) Oxidation of carbohydrate

Answer

Answer: (c) Synthesis of chlorophyll

Chapter 12 Biology Class 11 MCQs Question 3.
Which of the following is a group of micronutrients?
(a) Ca, Zn, B
(b) Fe, Mn, Cu
(c) Cl, C, Ca
(d) Ni, Mo, H

Answer

Answer: (b) Fe, Mn, Cu
Explanation:
Iron, mangenese and copper are micronutrients.

MCQ On Mineral Nutrition Class 11 Question 4.
The process of conversion of NO2– to N2 is called
(a) nitrification
(b) ammonification
(c) denitrification
(d) nitrogen fixation

Answer

Answer: (c) denitrification
Explanation:
The process of conversation of NO2– to N2 is called denitrification.

MCQ Questions For Class 11 Biology Chapter Wise Question 5.
The formation of first stable product of nitrogen fixation is catalysed by enzyme
(a) dehydrogenase
(b) nitrogenase
(c) isomerase
(d) none of these

Answer

Answer: (b) nitrogenase
Explanation:
The first stable product of nitrogen fixation is ammonia obtained from atmospheric nitrogen catalysed enzyme nitrogenase.

Class 11 Biology MCQ Question 6.
Manganese toxicity leads to deficiency of
(a) iron
(b) calcium
(c) magnesium
(d) all of the above

Answer

Answer: (d) all of the above
Explanation:
Manganese toxicity causes deficiency of iron, magnesium and calcium.

Mineral Nutrition Questions And Answers Question 7.
Chlorosis will occur if a plant is grown in
(a) dark
(b) shade
(c) strong light
(d) Fe – free medium

Answer

Answer: (d) Fe – free medium

MCQ Questions Class 11 Biology Question 8.
Choose the correct function of magnesium.
(a) It is a constituent of several coenzyme.
(b) It activates the enzymes of respiration and photosynthesis.
(c) It activates enzyme catalase.
(d) It helps in maintaining anion-cation balance.

Answer

Answer: (b) It activates the enzymes of respiration and photosynthesis.
Explanation:
Magnesium is absorbed by plants as Mg2+
It activates the enzymes of respiration and photosynthesis.
It is involved in the synthesis of DNA RNA.
It is the constituent of ring structure of chlorophyll.
It helps to maintain ribosome structure.

Biology Class 11 MCQ Question 9.
Mineral salts which are absorbed by the roots from soil are in the form of
(a) Dilute solution
(b) Very concentrated solution
(c) Concentrated solution
(d) Very dilute solution

Answer

Answer: (d) Very dilute solution

MCQ Questions For Class 11 Biology Question 10.
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 11.
Oxygen scavangers present in root nodules of legumes is
(a) haemoglobin
(b) leg haemoglobin
(c) cyano haemoglobin
(d) none of these

Answer

Answer: (b) leg haemoglobin
Explanation:
Leg-haemoglobin is the oxygen scavanger in root nodules of legumes.

Question 12.
Which one of the following is not a micronutrient?
(a) Magnesium
(b) Molybdenum
(c) Boron
(d) Zinc

Answer

Answer: (a) Magnesium

Question 13.
Which of the following is not a macronutrient
(a) iron
(b) calcium
(c) manganese
(d) phosphorus

Answer

Answer: (c) manganese

Question 14.
Insectivorous plants grow where
(a) There is carbohydrate deficient soil
(b) There is nitrogen deficient soil
(c) Vitamin c is required
(d) Hormones are required

Answer

Answer: (b) There is nitrogen deficient soil

Question 15.
Phytotron is meant for
(a) Controlled humidity
(b) Induction of mutations
(c) Controlled irradiation
(d) Growing plants under controlled environment

Answer

Answer: (d) Growing plants under controlled environment

Question 16.
Toxicity of which element leads to the appearance of brown spots on leaves
(a) Mg
(b) Mn
(c) Fe
(d) Cu

Answer

Answer: (b) Mn
Explanation:
Toxicity of mangenese leads to the appearance of the brown spots with chlorotic veins.

Question 17.
Presence of phosphorus
(a) brings about healthy root growth
(b) promotes fruit ripening
(c) retards protein formation
(d) none

Answer

Answer: (c) retards protein formation

Question 18.
Which element is required for opening and closing of stomata?
(a) P
(b) K
(c) Ca
(d) Na

Answer

Answer: (b) K
Explanation:
Potassium plays an important role in opening and closing of stomata.

Question 19.
Exanthema is due to deficiency of
(a) B
(b) Mo
(c) Mn
(d) Cu

Answer

Answer: (d) Cu

Question 20.
NPK denotes
(a) Nitrogen, Protein, Kinetin
(b) Nitrogen, Protein, Potassium
(c) Nitrogen, Potassium, kinetin
(d) Nitrogen, Phosphorus, Potassium

Answer

Answer: (d) Nitrogen, Phosphorus, Potassium

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