NEET Biology Mineral Nutrition MCQs Set 08

Multiple Choice Questions (MCQs) for NEET Biology: Mineral Nutrition

Access targeted multiple-choice questions for Mineral Nutrition designed to align with the latest NEET academic syllabus for NEET Biology. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.

Practice Mineral Nutrition MCQs for NEET Biology

Access the complete set of multiple-choice questions for Mineral Nutrition below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official NEET textbooks.

Multiple Choice Questions

Question 1: Deficiency symptoms of nitrogen and potassium are visible first in
(a) Senescent leaves
(b) Young leaves
(c) Roots
(d) Buds
Show Answer & Explanation

Answer: (a) Senescent leaves

Explanation:
1. Nitrogen and potassium are mobile elements.

Question 2: Which one of the following is wrong statement?
(a) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins
(b) Nitrosomonas and Nitrobacter are chemoautotrophs
(c) Anabaena and Nostoc are capable of fixing nitrogen in free-living state also
(d) Root nodule forming nitrogen fixers live as aerobes under free-living conditions
Show Answer & Explanation

Answer: (a) Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins

Explanation:
1. Phosphorus is not constituent of all proteins.

Question 3: For its action, nitrogenase requires 2+
(a) High input of energy
(b) Light
(c) Mn
(d) Super oxygen radicals
Show Answer & Explanation

Answer: (a) High input of energy

Explanation:
1. Nitrogenase is an enzyme which catalyses nitrogen-fixation reaction have sites, that facilitate high energy free electrons.

Question 4: Which one of the following elements in plants is not remobilised?
(a) Sulphur
(b) Phosphorus
(c) Calcium
(d) Potassium
Show Answer & Explanation

Answer: (c) Calcium

Explanation:
1. Ca is not a mobile element.

Question 5: A prokaryotic autotrophic nitrogen fixing symbiont is found in
(a) Pisum
(b) Alnus
(c) Cycas
(d) Cicer
Show Answer & Explanation

Answer: (c) Cycas

Explanation:
1. Bacteria Anabaena is autotroph and found in symbiotic association with non-leguminous plants. like Cycas, Azolla.

Question 6: Which one of the following is essential for photolysis of water?
(a) Copper
(b) Boron
(c) Manganese
(d) Zinc
Show Answer & Explanation

Answer: (c) Manganese

Explanation:
1. Mn is essential for photolysis of water.

Question 7: Which one of the following is not an essential mineral element for plants while the remaining three are?
(a) Cadmium
(b) Phosphorus
(c) Iron
(d) Manganese
Show Answer & Explanation

Answer: (a) Cadmium

Explanation:
1. Cadmium is not an essential element.
2. It does not come under 17 essential elements.

Question 8: An element playing important role in nitrogen fixation is
(a) Molybdenum
(b) Copper
(c) Manganese
(d) Zinc
Show Answer & Explanation

Answer: (a) Molybdenum

Explanation:
1. Mo is an element which plays role is nitrogen fixation Mo-Fe Nitrogenase Fe.

Question 9: Which one of the following is not a micronutrient?
(a) Boron
(b) Molybdenum
(c) Magnesium
(d) Zinc
Show Answer & Explanation

Answer: (c) Magnesium

Explanation:
1. Mg is a macronutrient.

Question 10: One of the free-living, anaerobic nitrogen-fixer is
(a) Azotobacter
(b) Beijernickia
(c) Rhodospirillum
(d) Rhizobium
Show Answer & Explanation

Answer: (c) Rhodospirillum

Explanation:
1. Rhodospirullum is an anaerobic, free living photosynthetic bacteria.

Question 11: Manganese is required in
(a) Plant cell wall formation
(b) Photolysis of water during photosynthesis
(c) Chlorophyll synthesis
(d) Nucleic acid synthesis
Show Answer & Explanation

Answer: (b) Photolysis of water during photosynthesis

Explanation:
1. Mn is required for photolysis of water.

Question 12: Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?
(a) Cicer arietinum
(b) Casuarina equisetifolia
(c) Crotalaria juncea
(d) Cycas revolute
Show Answer & Explanation

Answer: (b) Casuarina equisetifolia

Explanation:
1. Frankia involved in nitrogen fixation in Casuarina and Alnus.

Question 13: Which one of the following elements is not an essential micronutrient for plant growth?
(a) Ca
(b) Mn
(c) Zn
(d) Cu
Show Answer & Explanation

Answer: (a) Ca

Explanation:
1. It is a macronutrients.

Question 14: Which one of the following statements is correct?
(a) At present it is not possible to grow maize without chemical fertilizers.
(b) Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies.
(c) Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants.
(d) Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and potassium for plant nutrition in soil.
Show Answer & Explanation

Answer: (b) Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies.

Explanation:
1. Excess growth of living organism in water bodies due to fertilizers are called eutrophication.

Question 15: About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and:
(a) Calcium and phosphorous
(b) Phosphorus and sulphur
(c) Sulphur and magnesium
(d) Magnesium and sodium
Show Answer & Explanation

Answer: (a) Calcium and phosphorous

Explanation:
1. This option, Calcium and phosphorous, is the one that agrees with the standard NCERT facts for this topic.

Question 16: Sulphur is an important nutrient for optimum growth and productivity in
(a) Pulse crops
(b) Cereals
(c) Fibre crops
(d) Oilseed crops
Show Answer & Explanation

Answer: (d) Oilseed crops

Explanation:
1. This option, Oilseed crops, is the one that agrees with the standard NCERT facts for this topic.

Question 17: The deficiencies of micro-nutrients, 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) Cu, Mn, Fe
(b) Co, Ni, Mo
(c) Mn, Co, Ca
(d) Ca, X, Na
Show Answer & Explanation

Answer: (a) Cu, Mn, Fe

Explanation:
1. Cu Mn Fe Complex IV Photolysis Activates of water enzymes.

Question 18: Which of the following elements is a constituent of biotin?
(a) Sulphur
(b) Magnesium
(c) Calcium
(d) Phosphorus
Show Answer & Explanation

Answer: (a) Sulphur

Explanation:
1. Sulphur is a constituent of Co-A, vitamins like thiamine and biotin and ferredoxin.

Question 19: Which one of the following elements is almost non-essential for plants?
(a) Zn
(b) Na
(c) Ca
(d) Mo
Show Answer & Explanation

Answer: (b) Na

Explanation:
1. Na is almost non-essential because required in micro amount.

Question 20: Plants take zinc in the form of
(a) ZnSO4
(b) Zn++
(c) ZnO
(d) Zn
Show Answer & Explanation

Answer: (b) Zn++

Explanation:
1. It is absorbed in the form of Zn2+ ions.

Question 21: Boron in green plants assists in
(a) Activation of enzymes
(b) Acting as enzyme co-factor
(c) Photosynthesis
(d) Sugar transport
Show Answer & Explanation

Answer: (d) Sugar transport

Explanation:
1. This option, Sugar transport, is the one that agrees with the standard NCERT facts for this topic.

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