MCQs For NCERT Class 11 Biology Chapter 12 Mineral Nutrition

Please refer to the MCQ Questions for Class 11 Biology Chapter 12 Mineral Nutrition with Answers. The following Mineral Nutrition Class 11 Biology MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Biology with Answers for all chapters in your NCERT Class 11 Biology book.

Mineral Nutrition Class 11 MCQ Questions with Answers

See below Mineral Nutrition Class 11 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Passive absorption of minerals depends on   
(a) temperature
(b) temperature and metabolic inhibitor
(c) metabolic inhibitor
(d) humidity.

Question. The product(s) of reaction catalysed by nitrogenase in root nodules of leguminous plants is/are   
(a) ammonia alone
(b) nitrate alone
(c) ammonia and oxygen
(d) ammonia and hydrogen.

Question. Which one of the following elements is not an essential micronutrient for plant growth?   
(a) Ca
(b) Mn
(c) Zn
(d) Cu

Question. Which element plays an important role in nitrogen fixation? 
(a) Mn
(b) Mo
(c) Zn
(d) Cu

Question. Which of the following is an INCORRECT match of essential element and function?   
(a) Manganese – structural component of chlorophyll.
(b) Calcium – component of the middle lamella.
(c) Zinc – enzyme activator.
(d) Iron – component of ferredoxin.

Question. Thiobacillus is a group of bacteria helpful in carrying out   
(a) denitrification
(b) nitrogen fixation
(c) chemoautotrophic fixation
(d) nitrification.

Question. Which of the following bacteria reduce nitrate in soil into nitrogen?   
(a) Nitrobacter
(b) Nitrococcus
(c) Thiobacillus
(d) Nitrosomonas

Question. In kranz anatomy, the bundle sheath cells have   
(a) thin walls, many intercellular spaces and no chloroplasts
(b) thick walls, no intercellular spaces and large number of chloroplasts
(c) thin walls, no intercellular spaces and several chloroplasts
(d) thick walls, many intercellular spaces and few chloroplasts.

Question. Kranz anatomy is one of the characteristics of the leaves of   
(a) potato
(b) wheat
(c) sugarcane
(d) mustard. 

Question. The C₄ plants are photosynthetically more efficient than C₃ plants because 
(a) the CO₂ efflux is not prevented
(b) they have more chloroplasts
(c) the CO2 compensation point is more
(d) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase.

Question. In leaves of C₄ plants, malic acid synthesis during CO₂ fixation occurs in   
(a) bundle sheath
(b) guard cells
(c) epidermal cells
(d) mesophyll cells. 

Question. In the leaves of C₄ plants, malic acid formation during CO₂ fixation occurs in the cells of   
(a) bundle sheath 
(b) phloem
(c) epidermis
(d) mesophyll.

Question. As compared to a C3-plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4-plants?   
(a) Two
(b) Six
(c) Twelve
(d) Zero

Question. Photosynthesis in C4 plants is relatively less limited by atmospheric CO₂ levels because   
(a) effective pumping of CO₂ into bundle sheath cells
(b) RuBisCO in C₄ plants has higher affinity for CO₂
(c) four carbon acids are the primary initial CO₂ fixation products
(d) the primary fixation of CO₂ is mediated via PEP carboxylase.

Question. In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO₂ is   
(a) ribulose biphosphate carboxylase
(b) phosphoenol pyruvic acid carboxylase
(c) ribulose phosphate kinase
(d) fructose phosphatase.

Question. Stomata of CAM plants   
(a) are always open
(b) open during the day and close at night
(c) open during the night and close during the day
(d) never open.

Question. Which pair is wrong?   
(a) C3-maize (b) C4-kranz anatomy
(c) Calvin cycle-PGA
(d) Hatch and Slack cycle – OAA

Question. Which is the first CO2 acceptor enzyme in C4 plants?   
(a) RuDP carboxylase
(b) Phosphoric acid
(c) RuBisCO
(d) PEP- carboxylase

Question. During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by 
(a) carotene
(b) cytochrome
(c) leghaemoglobin
(d) xanthophyll.

Question. The first stable product of fixation of atmospheric nitrogen in leguminous plants is   
(a) NO3−
(b) glutamate
(c) NO2−
(d) ammonia. 

Question. Nitrifying bacteria   
(a) oxidise ammonia to nitrates
(b) convert free nitrogen to nitrogen compounds
(c) convert proteins into ammonia
(d) reduce nitrates to free nitrogen.

Question. The function of leghaemoglobin in the root nodules of legumes is   
(a) inhibition of nitrogenase activity
(b) oxygen removal
(c) nodule differentiation
(d) expression of nif gene.

Question. Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogenfixation. Which one of the following statements is not correct during this process of nitrogen fixation?   
(a) Leghaemoglobin scavenges oxygen and is pinkish in colour.
(b) Nodules act as sites for nitrogen fixation.
(c) The enzyme nitrogenase catalyses the conversion of atmospheric N₂ to NH₃.
(d) Nitrogenase is insensitive to oxygen.

Question. One of the free-living, anaerobic nitrogen-fixer is 
(a) Beijerinckia
(b) Rhodospirillum
(c) Rhizobium
(d) Azotobacter.

Question. What is true for cyanobacteria? 
(a) Oxygenic with nitrogenase
(b) Oxygenic without nitrogenase
(c) Non oxygenic with nitrogenase
(d) Non oxygenic without nitrogenase

Question. Which aquatic fern performs nitrogen fixation? 
(a) Azolla
(b) Nostoc
(c) Salvia
(d) Salvinia

Question. Leghaemoglobin helps in   
(a) nitrogen fixation
(b) protecting nitrogenase from O2
(c) destroys bacteria
(d) transport of food in plants

Question. Which of the following is correct set of micronutrient for plants?   
(a) Mg, Si, Fe, Cu, Ca
(b) Cu, Fe, Zn, B, Mn
(c) Mg, Fe, Zn, B, Mn
(d) Mo, Zn, Cl, Mg, Ca

Question. In glycolysis, glucose molecule is converted into:   
(a) PEP
(b) RuBP
(c) Acetyl CoA
(d) Pyruvic acid