In This Post we are  providing Chapter-12 Mineral Nutrition NCERT MCQ for Class 11 Biology which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS  can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MCQ ON MINERAL NUTRITION

Question 1 : ‘Whip-tail’ disease in cauliflower is noted due to deficiency of

• a) molybdenum
• b) manganese
• c) magnesium
• d) nitrogen

Answer : molybdenum

Question 2 : Which of the following is correct set of micronutrient for plants?

• a) Cu, Fe, Zn, B, Mn
• b) Mo, Zn, Cl, Mg, Ca
• c) Mg, Fe, Zn, B, Mn
• d) Mg, Si, Fe, Cu, Ca

Answer : Cu, Fe, Zn, B, Mn

Question 3: A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

• a) Anabaena
• b) Chlorella
• c) Tolypothrix
• d) Nostoc

Answer : Anabaena

Question 4 : Azotobacter and Beijerinckia are the examples of

• a) non-symbiotic nitrogen-fixers
• b) ammonifying bacteria
• c) None of these
• d) symbiotic nitrogen-fixers

Answer : non-symbiotic nitrogen-fixers

Question 5 : Which of the following is not performed by root hairs ?

• a) CO₂ uptake
• b) Oxygen uptake
• c) Water uptake
• d) Mineral uptake

Answer :  CO₂ uptake

Question 6 : The plant ash is an indication of

• a) mineral salts absorbed by plants
• b) None of the above
• c) waste product
• d) organic matter of plant

Answer : mineral salts absorbed by plants

Question 7 : Hydroponics is

• a) soilless culture
• b) nutrient less culture
• c) water less culture
• d) none of these

Answer : soilless culture

Question 8 : Which element is required in the germination of pollen grain?

• a) Boron
• b) Chlorine
• c) Potassium
• d) Calcium

Answer : Boron

Question 9 : A trace element essential for plant growth and radio-isotope, which is used in cancer therapy is

• a) cobalt
• b) sodium
• c) iron
• d) calcium

Answer : cobalt

Question 10: Which one of the following elements in plants is not remobilised?

• a) Calcium
• b) Sulphur
• c) Phosphorus
• d) Potassium

Answer : Calcium

Question 11: Plants die from prolonged water-logging because

• a) root respiration stops.
• b) cell sap in the plants becomes too dilute.
• c) nutrients leach down due to excess water.
• d) soil nutrients become very dilute.

Answer : root respiration stops.

Question 12 : Which of the following minerals activate the enzymes involved in respiration?

• a) magnesium and manganese
• b) nitrogen and phosphorus
• c) potassium and calcium
• d) sulpur and iron

Answer : magnesium and manganese

Question 13 : Soil can easily become deficient in____________ because these ions are negatively charged and do not stick to negatively charged clay particles.

• a) Nitrate
• b) Ammonium
• c) Both
• d) None of these

Answer : Nitrate

Question 14 : Legumes’ roots have swellings called nodules that

• a) contain nitrogen-fixing bacteria
• b) increases the surface area for water uptake
• c) provide a steady supply of sugar to the host plant
• d) produce antibiotics that protect the plant from soil bacteria

Answer : contain nitrogen-fixing bacteria

Question 15 : Macronutrients are_____ than micronutrients

• a) Needed in greater quantities
• b) More essential
• c) More important for growth
• d) Larger molecules

Answer : Needed in greater quantities