MINERAL NUTRITION Quiz 4 1. Element needed in the synthesis of auxin (A) Tryptophan (B) Manganese (C) Zinc (D) Boron 2. 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 3. S is the main constituent of (A) All amino acids (B) Vitamin (thiamine, biotin) (C) Coenzymes (D) Both B and C 4. Which is correct for iron (A) I (B) II (C) III (D) IV 5. 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 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. Iron is _______ from Fe2+ to Fe3+ (A) Reversibly oxidised (B) Reversibly reduced (C) Irreversibly oxidised (D) Irreversibly reduced 8. Zinc activates especially (A) Catalases (B) Carboxylases (C) Carbohydrases (D) Permeases 9. 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 10. 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 11. In plants, Manganese is absorbed in the form of (A) Manganous ion (B) Manganic ion (C) Manganate ion (D) Permanganate ion 12. 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 13. Copper is absorbed as (A) Cuprous ion (B) Cupric ion (C) Copper sulphate ion (D) Cuprite 14. Best defined function of Mn is (A) Activation of enzymes (B) Splitting of water (C) Respiration (D) Nitrogen metabolism 15. Manganese activates many enzymes involve in (A) Photosynthesis (B) Respiration (C) Nitrogen metabolism (D) All of the above 1 out of Time is Up! Time's up
