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.
Mineral Nutrition Class 11 MCQs Questions with Answers
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: (d) appearance of dead necrotic tissue
Function of zinc is
(a) Closing of stomata
(b) Biosynthesis of 3-IAA
(c) Synthesis of chlorophyll
(d) Oxidation of carbohydrate
Answer: (c) Synthesis of chlorophyll
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: (b) Fe, Mn, Cu
Iron, mangenese and copper are micronutrients.
The process of conversion of NO2– to N2 is called
(d) nitrogen fixation
Answer: (c) denitrification
The process of conversation of NO2– to N2 is called denitrification.
The formation of first stable product of nitrogen fixation is catalysed by enzyme
(d) none of these
Answer: (b) nitrogenase
The first stable product of nitrogen fixation is ammonia obtained from atmospheric nitrogen catalysed enzyme nitrogenase.
Manganese toxicity leads to deficiency of
(d) all of the above
Answer: (d) all of the above
Manganese toxicity causes deficiency of iron, magnesium and calcium.
Chlorosis will occur if a plant is grown in
(c) strong light
(d) Fe – free medium
Answer: (d) Fe – free medium
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: (b) It activates the enzymes of respiration and photosynthesis.
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.
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: (d) Very dilute solution
Which one of the following mineral elements plays an in biological nitrogen fixation?
Answer: (d) Molybdenum
Oxygen scavangers present in root nodules of legumes is
(b) leg haemoglobin
(c) cyano haemoglobin
(d) none of these
Answer: (b) leg haemoglobin
Leg-haemoglobin is the oxygen scavanger in root nodules of legumes.
Which one of the following is not a micronutrient?
Answer: (a) Magnesium
Which of the following is not a macronutrient
Answer: (c) manganese
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: (b) There is nitrogen deficient soil
Phytotron is meant for
(a) Controlled humidity
(b) Induction of mutations
(c) Controlled irradiation
(d) Growing plants under controlled environment
Answer: (d) Growing plants under controlled environment
Toxicity of which element leads to the appearance of brown spots on leaves
Answer: (b) Mn
Toxicity of mangenese leads to the appearance of the brown spots with chlorotic veins.
Presence of phosphorus
(a) brings about healthy root growth
(b) promotes fruit ripening
(c) retards protein formation
Answer: (c) retards protein formation
Which element is required for opening and closing of stomata?
Answer: (b) K
Potassium plays an important role in opening and closing of stomata.
Exanthema is due to deficiency of
Answer: (d) Cu
(a) Nitrogen, Protein, Kinetin
(b) Nitrogen, Protein, Potassium
(c) Nitrogen, Potassium, kinetin
(d) Nitrogen, Phosphorus, Potassium
Answer: (d) Nitrogen, Phosphorus, Potassium
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