MCQ Mineral nutrition

 

MCQ Mineral  Nutrition:

1.  Which is essential for selective permeability  of ce membrane.

(1) Zn        (2) Ca      (3) Mo      (4) S 

Answer(2) 

2. Chlorosis in plants occurs due to 

(1) High sunlight  intensity  

(2) Carotenoid  degeneration  

(3) Absorption  of yellow   pigments  from the soil 

(4)  Deficiency  of Mg and Fe  in the soil 

Answer (4) 

3.  Mg and Fe are  needed for plants in the 

(1) Energy transfer 

(2) Synthesis  of chlorophyll  pigment in the  leaves  

(3) Stomatal opening  

(4) Translocation of carbohydrates. 

Answer (2) 

4. Match Column I with Column  II, 

Column I                      Colunm II 

A. Mg                       1. Found in some amino 
                                    acids 

B. S                          2. Structural  component
                                   of  chlorophyll 

C. I                        3. not  important for  plants 

D. Mn                   4. required for photolysis
                                 of water . 

(1) A_ 2 , B_1, C_ 3, D_ 4

(2) A_ 1, B_ 2, C_ 3, D_ 4

(3) A_1, B_ 3, C_ 4, D_ 2

(4) A_ 2, B_ 3, C_ 1, D_ 4

Answer (1) 

5. What is the role of Molybdenum ?

(1) Nitrogen  fixation 

(2) Flower  induction 

(3) Chromosome  contraction 

(4) Carbon assimilation 

Answer (1)  

6. Plastocyanin contains 

(1) Mo      (2) Mg      (3)  Cu     (4) Zn 

Answer (3) 

7. Osmolarity of cells is mainly due to 

(1) K+        (2) Mn++       (3) Ca++   (4) CL- 

Answer(1) 

8. Copper deficiency  leads to 

(1) Exanthema 

(2) whiptail  of cauliflower  

(3) little leaf condition 

(4) interveinal chlorosis 

Answer (1) 

9. Gray spots of oat are caused due to deficiency  of 

(1) Cu       (2) Zn        (3) Mn        (4) Fe 

Answer (3) 

10. Most mineral in a soil are in the 

(1) Sand               (2) Clay 

(3) Silt                   (4)  air pockets 

Answer (2) 

11. Small clay particles  hold  calcium,  potassium and magnesium  ions because  surfaces of clay particles  are 

(1)  smooth  

(2) covered with tiny crevices  

(3) negatively  charged 

(4) waxy 

Answer (3) 

12.  Most of the dry weight of a tree comes from atoms acquired  from 

(1) soil                     (2) water 

(3) air                          (4) decomposing leaves

  Answer (3) 

13. A  root concentrates minerals by 

(1)  active  transport  

(2) facilitated diffusion 

(3) Osmosis 

(4) Diffusion 

Answer (1) 

14. As water and minerals move toward the vascular cylinder of a root,  they  must enter the cytoplasm  of 

(1) xylem vessels       (2) cortex cells 

(3) Endodermal cells  (4) Pericycle cells 

Answer (3) 

15.  Most vascular  plants increase  the  absorption  of  minerals  by 

(1) mycorrhizae 

(2) convertible phloem 

(3) casparian channels along the phloem 

(4) companion  cells 

Answer (1) 

16. Uptake of mineral ions into th xylem is controlled by 

(1) epidermal  cells       (2) cortex cells 

(3) endodermal cells  (4) xylem cells 

Answer (3) 

17. When a cell contains some nondiffusible or fixed ions which are kept balanced by diffusible  ions of opposite charge, this condition  is known as 

(1) Donnan equilibrium  

(2) Chemical equilibrium 

(3) Saturation effect 

(4) Ionic exchange 

Answer (1) 

18.  Point out the one which does not justify  active  absorption  of minerals?

(1) Cations and anions are often absorbed  at different  rates 

(2) Absorption  of different  ions is highly  selective  

(3) Absorption is accompanied by increase in the rate of respiration.

(4) Absorption  is the  movement of substances from higher concentration to their lower concentration. 

Answer (4) 

19. Minerals absorbed  by roots move to the leaf through 

(1) xylem                    (2) phloem 

(3) sieve tubes          (4) none of these 

Answer (1)

 20. Membrane pathways for minerals along permeases 

(1)  need ATP 

(2) need carrier  solute  complex 

(3) need pinosomes 

(4) need diffusion gradient.

Answer (4) 

21. Carrier  proteins for active salt uptake 

(1) have pores 

(2) form complex  with ions 

(3) function under transpiration  pull 

(4) all of the above.

Answer (2) 

 22. The ascent of minerals is 

(1) equal to the rate of translocation  of water 

(2) dependent  on transpiration   pull 

(3) through xylem vessel

(4) all of the above 

Answer (4) 

23. Bidirectional  translocation  of minerals  take place in 

(1) xylem                  (2) phloem 

(3) cambium             (4) parenchyma 


Answer (1) 

 24. Passive absorption  of mineral   depends on 

(1) temperature           (2) humidity  

(3)metabolic inhibitor    (4)  (1) and (3) 

Answer (1)

25.Passive absorption  of mineral salts is not dependent  of 


(1) osmosis                (2) diffusion  

(3) Donnan equilibrium   (4)  ion exchange

Answer (1) 

26. Active uptake of minerals by roots mainly depends on 

(1) availability of oxygen    (2) light 

(3) Temperature             (4) availability  of CO2 

Answer (1) 

27. Inorganic  nutrients are  present in the soil in the form of 

(1) molecules            (2) atoms 

(3) electrically  charged ions 

(4) parasites  

Answer(3) 

28. Active transport  of ions by the cell requires 

(1) high temperature   (2) ATP 

(3) alkaline  pH                (4) salts 

Answer (2) 

29. Theory  suggesting  that carbon dioxide in respiration  helps in mineral absorption  is called  

(1) Carbonic acid  exchange theory  

(2) Contact exchange theory 

(3) Active mineral absorption  

(4) Donnan dquilibrium 

Answer (1) 

30. Insectivorous/ carnivorous  plants live in soils that are deficient  in nitrogen.Select a pair of insectivorous plants 

(1) Drosera and Rafflesia  

(2) Nepenthes and Utricularia 

(3) Dionaea  and Viscum 

(4) Venus   fly trap and Rafflesia 

Answer (2) 

31. Drosera catches insect by 

(1) pitcher           (2) adhesive pads 

(3) bladder  

(4) tentacles  secreting  shining    liquid.

Answer (4)

32. Cusculta is  an example of a 

(1)  heteroparasite       (2) holoparasite 

(3) root parasite           (4) semiparasite 

Answer (2) 

33. The example of a partial  root parasite is 

(1) Santalum             (2)  Cuscuta 

(3) Arceuthobium     (4) Viscum 

Answer (1) 

34. Saprophytes  belonging  to angiosperms are known as 

(1) Humus  plants    (2) Organic plants 

(3) Facultative  saprophytes 

(4) obligate  saprophytes. 

Answer (1)

35. A heterotroph is an organism that derives it's energy from 

(1)  light             (2) inorganic  molecules 

(3) heat               (4) organic molecules 

Answer (4)

36. The carnivorous plants live in water logged or  boggy habitats  which are 

(1) deficiency  in nitrates 

(2) deficiency  in sulphites 

(3) deficiency  in oxygen 

(4) deficiency  in many  salts.

Answer (1)

37. Which one of the following  insectivorous  plants is also known as Sundew plant?

(1) Nepenthes             (2) Drosera 

(3) Utricularia              (4) Dionaea 

Answer (2)

38. Match the following  essential  elements (List I ) with their  respective  roles  ( List II) and select the correct answer  using the codes given below the lists 

 List _ I                            List _ II

A. Chlorine                  1. Constituent  of plas_                                              tocyanin 

B. Copper                    2. Constituent  of nitrate
                                        reductase 

C. Molybdenum     3. Canstitunt of alchohol 
                                    dehydrogenase 

D. Zinc                    4. Required for O2 evolut_                                    ion in photosynthesis 

                                5. Required  for phosphate  
                                  transfer.


Codes :        A         B          C     D 

(1)                  4          1         3     2 

(2)                1             2         5    3 

(3)                 1             4       5     2 

(4)                 4            1      2         3 

Answer (4) 

39. Which of the following  components are associated  with nitrate reductase activity? 

1.  Reduced  pyridine   nucleotide  

2.  Flavin    adenine  dinucleotide 

3. Molybdenum  

4.  Boron 

Select the correct  answer using the codes gives  below 

Codes: 

(1) 1, 2  and 3              (2) 1 and 2 

(3) 2, 3 and 4                 (4)  1, 3 and 4 

Answer (1) 

40. Farmers have  reported  over 50% higher yield of rice by using  which of the following  biofertilizer?

(1) Mycorrhiza       

(2) Anabaena  azollae 

(3) Lichen 

(4)  Legume_ rhizome    symbiosis 

Answer (2)


41. Read the following  statements  regarding  the mineral nutrition  in plants 

(1) For the elements  that are actively mobilized  within the plants, the deficiency  symptoms tend to appear first in the young tissues. 

(2) Manganese  competes with iron and magnesium  for uptake  and with magnesium  for binding  with enzymes. 

(3) Manganese  inhibits calcium  translocation  in shoot apex. 

(4) Rhodospirillum is aerobic free_ living  nitrogen fixing  microbe. 

Which of these  are correct 

(1) (i) , (iii) & (iv)      (2) (ii) & (iv) 

(3) (ii) &(iii)               (4)(ii) ,(iii) & (iv)

Answer (3)

42. Read the following  matches regarding  the elements  and their   deficiency  symptoms  in  plants 

(1) Molybdenum _ Brown heart of turnip 

(2)  Potassium  _ Plastid   disintegration 

(3) Magnesium  _  Underdeveloped phloem & pith 

(4)  Phosphorus  _ Delay in seedgermination

Which of these  are correct  

(1) (i) ,(iii) & (iv)      (2) (ii), (iii) & (iv) 

(3) (i), (ii) & (iii)          (4) (iii) & (iv) only 

Answer(2) 

43. The disease  ' little leaf' of fruit trees is caused by the deficiency  of 

(1) Copper                (2) Zinc 

(3) Manganese          (4) Cobalt 

Answer (2) 

44. Match the following  

(1) Boron             (p) Water _ splitting react__                                  ion in photosynthesis 

(2) Chlorine       (q)  Synthesis of auxin 

(3) Zinc               (r)   Redox  reactions

(4) Copper        (s)  Uptake and utilization of                                     Ca²+

(1) (i)_ (p); (ii) _(r); (iii) _ (q); (iv) _(s) 

(2) (i) _(r); (ii)_ (p);(iii) _ (q); (iv) _(s)

(3)  (i) _(s); (ii)_ (p); (iii) _ (q); (iv) _(r)  

(4) (i) _(s);(ii)_(q);(iii) _ (p);(iv) _(r)

Answer (3) 



45. Match the following  

(i) Magnesium              (p) Activator of  alcoh_                                             dehydrogenase  

                                         
(ii)  Zinc                (q) Component of ferred__                                     oxin  and cytochromes

(iii) Iron               (r) Activator   of Rubisco 

(iv) Boron            (s)  Pollen  germination 

(1) (i) _ (r); (ii) _(p); (iii)_(s) ; (iv) _(q) 

(2) (i) _ (s);   (ii)_(p); (iii)_ (q); (iv)_ (r) 

(3) (i) _ (r);    (ii)_ (q); (iii)_ (p); (iv) _(s)

(4) (i) _ (r);  (ii) _ (p) ; (iii) _(q) ; (iv) _ (s)

Answer (4) 

46.  Match  the following  

(i) Calcium        (p) Constituent  of ferrodoxin                                 ,  thiamine   & Biotin  

(ii)  Potassium     (q) Formation  of mitotic                                          spindle

(iii) Sulphur         (r) Splitting  of water to lib_                                   erate O2 during  photosy_                                       nthesis 

(iv) Manganese       (s)  Maintenance  of                                                   anioncation balance 

(1) (i) _ (q);  (ii)_ (s);  (iii)_ (p); (iv) _ (r) 

(2) (i)_ (s);(ii)_  (q) ; (iii)_ (p); (iv) _(r)

(3)(i)_ (p);(ii)_   (s) ; (iii)_ (q); (iv) _(r)

(4)  (i)_ (q);(ii)_  (r); (iii)_ (p); (iv) _(s)

Answer (1) 


47. Critic toxicity  level  caused  by mineral nutrition means   reduction   in dry  weight of plant  tissue   by 
(1) 5%                  (2) 10% 

(3) 20%                 (4) 25% 

Answer (2)

48. Match  List _ I( Element) with List _II  (Process) and  select    the correct    answer  using    the codes given  below  the lists

 List _ I                         List _ II

A. Molybdenum      1. photosynthesis 

B. Manganese         2. Respiration 

C.  Sulphur              3. Nitrate   reduction 

D. Calcium             4. Cell division 

                                  5. Protein synthesis 

Codes : A          B              C         D 

(1)        5            2            3            1

(2)         3            1            5           4

3)        2               1             4          5

(4)       3               2               4         5


Answer (2) 

49. Consider the following  statements 

1. Copper  is  present in cytochrome  oxidase.

2. Pantothenic      acid   is  the  precursor of  co_ enzymes A. 

3. Thiamine  pyrophosphate  is the   prosthetic group in  decarboxylase  

4. Zinc    is  present  in RNA     and DNA polymerase 

Which of these    statements are correct  ? 

(1)  1 and   2         (2) 2, 3 and  4

(3) 1, 2, 3 and 4      (4) 1, 3  and  4 

Answer (1) 

50. Regarding  the mineral nutrition  of  plants,  which one of  the following  statements  is  correct? 

(1) The availability  of iron  to  plants decreases  with the  increase of  acidity of  the soil 

(2) Molybdenum   is  a  constituent  of  nitrate  reductase    system 

(3)  Sulphur  is    a   constituent  of  phenylalanine 

(4) All  of   the above 

Answer (2) 










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