MINERAL NUTRITION Quiz 4 1. Copper is absorbed as (A) Cuprous ion (B) Cupric ion (C) Copper sulphate ion (D) Cuprite 2. Inhibition of cell division is due to the deficiency of (A) N, K, S, Mo (B) N, S, Mn (C) N, Fe, S, Mg (D) Ca, Mg, K, Cu 3. Manganese activates many enzymes involve in (A) Photosynthesis (B) Respiration (C) Nitrogen metabolism (D) All of the above 4. The prominent symptom of Mn toxicity is (A) The appearance of brown spot (B) The appearance of yellow spot (C) Death of tissue (D) Delay flowering 5. Best defined function of Mn is (A) Activation of enzymes (B) Splitting of water (C) Respiration (D) Nitrogen metabolism 6. Any mineral ion concentration in tissues that ________ is considered toxic. (A) Reduces the dry weight of tissues by about 1% (B) Reduces the dry weight of tissues by about 10% (C) Increases the dry weight of tissues by about 1% (D) Increases the dry weight of tissues by about 10% 7. In plants, Manganese is absorbed in the form of (A) Manganous ion (B) Manganic ion (C) Manganate ion (D) Permanganate ion 8. Flowering will be delayed due to deficiency of (A) N, K, Mo (B) N, K, Mg, Mo (C) N, S, Mo (D) Ca, Mg, K 9. S is the main constituent of (A) All amino acids (B) Vitamin (thiamine, biotin) (C) Coenzymes (D) Both B and C 10. Chlorosis is caused due to deficiency of (A) N, K, Mo (B) N, K, P, S (C) Ca, K, Mg (D) N, S, Mo, Ni 11. Element needed in the synthesis of auxin (A) Tryptophan (B) Manganese (C) Zinc (D) Boron 12. Iron is _______ from Fe2+ to Fe3+ (A) Reversibly oxidised (B) Reversibly reduced (C) Irreversibly oxidised (D) Irreversibly reduced 13. Zinc activates especially (A) Catalases (B) Carboxylases (C) Carbohydrases (D) Permeases 14. Death of tissue is due to the deficiency of which element (A) N, K, Mo (B) Ca, Cu, K (C) N, K, P, S (D) N, S, Mg, Ni 15. Which is correct for iron (A) I (B) II (C) III (D) IV 1 out of Time is Up! Time's up
