Mineral Nutrition NEET MCQ

         MINERAL  NUTRITION

Q1. Which set of elements become toxic when their concentration exceeds 10 mmol/kg of dry matter in plants? 

(1) Cl, Mg, S             (2) S, Mg, Fe 

(3) B, Zn, Cu             (4) Mn, Mg, Ca

Ans.3

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Q2. Match the column I of elements with their deficiency symptoms in plants in column II and then select the correct option. 

        Column I            Column II 

      (Elements)          (Deficiency 

                                     symptoms) 

a. Zn                      (i) Plastid 

                                  disintegration 

b. Mn                    (ii) Accumulation of                   

                                  anthocyanin

c. S.                      (iii) Grey spots 

                                   in oats 

d. K                      (iv) Little leaf 

(1) a(iv), b(ii), c(iii), d(i) 

(2) a(i), b(ii), c(iii), d(iv) 

(3) a(ii), b(i), c(iv), d(iii) 

(4) a(iv), b(iii), c(ii), d(i)

Ans.4

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Q3. Which of the following prevents inactivation of enzyme nitrogenase by oxygen poisoning, during biological nitrogen fixation? 

(1) Nod factors 

(2) Leguminous haemoglobin 

(3) Cytochrome 

(4) Amides

Ans.2

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Q4. Which one of the following elements helps in photolysis of water and to maintain anion-cation balance in cells?  

(1) Boron 

(2) Chlorine 

(3) Manganese 

(4) Potassium

Ans.2

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Q5. Select the correct set of non-mineral essential elements 

(1) C, CI, N            (2) C, H, B 

(3) C, H, O             (4) H, O, CI

Ans.3

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Q6. Select the Incorrect statement related to Mn toxicity  

(1) Prevention of binding of Mg with enzymes 

(2) Promotion of Ca translocation to shoot apex 

(3) Reduction in uptake of Mg 

(4) Combined deficiency symptoms of Mg, Fe and Ca

Ans.2

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Q7. Nitrifying bacteria such as Nitrosomonas and Nitrobacter are

(1) Heterotrophs 

(2) Photoautotrophs 

(3) Symbiotic 

(4) Chemoautotrophs

Ans.4

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 Q8. Molybdenum (Mo) is component of 

(1) Nitrate reductase 

(2) Ferredoxin 

(3) Auxin 

(4) Catalase

Ans.1

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Q9. Sulphur is not a component of

(1) Cysteine 

(2) Biotin 

(3) Deoxyadenosine 

(4) Coenzyme-A

Ans.3

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Q10. Identify the element on the basis of given statements. 

a. Its deficiency symptoms first appear in young leaves 

b. It is required in formation of mitotic spindle 

(1) B                         (2) Fe 

(3) Ca                      (4) S 

Ans.3