This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 12 Mineral Nutrition – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 12 Mineral Nutrition Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which type of soil typically has a higher CEC? A) Saline soils. B) Sandy soils. C) Clay soils. D) Loamy soils. Show Answer Correct Answer: C) Clay soils. 2. Which macronutrient is essential for the synthesis of nucleic acids and proteins? A) Calcium. B) Phosphorus. C) Nitrogen. D) Magnesium. Show Answer Correct Answer: C) Nitrogen. 3. What is the conclusion of Experiment III? A) Carbon dioxide is necessary for photosynthesis. B) Oxygen is given off during photosynthesis. C) Light is necessary for photosynthesis. D) Chlorophyll is necessary for photosynthesis. Show Answer Correct Answer: B) Oxygen is given off during photosynthesis. 4. Essential elements (17) are- A) Only macronutrients. B) Only micronutrients. C) Both macro and micronutrients. D) C, H, O and N only. Show Answer Correct Answer: C) Both macro and micronutrients. 5. What causes water to move up the xylem to the leaves? A) Cohesion. B) Adhesion. C) Capillary action. D) All of the answers are correct. Show Answer Correct Answer: D) All of the answers are correct. 6. Find the group of bacteria in which all are nitrogen fixing:- A) Nitrosomonas, Streptococcus, Lactobacillus. B) Nitrobacter, Streptobacillus, Lactobacillus. C) Rhizobium, Azotobacter, Nostoc. D) Clostridium, Rhizobium, Lactobacillus. Show Answer Correct Answer: C) Rhizobium, Azotobacter, Nostoc. 7. What does Cation Exchange Capacity (CEC) measure? A) Soil's ability to hold and exchange cations. B) Soil's pH level. C) Soil's moisture content. D) Soil's ability to hold and exchange anions. Show Answer Correct Answer: A) Soil's ability to hold and exchange cations. 8. Which nutrient is essential for the synthesis of chlorophyll? A) Zinc. B) Copper. C) Iron. D) Boron. Show Answer Correct Answer: C) Iron. 9. What types of plants can be grown hydrophonically? A) Vegetables. B) Flowers. C) Herbs. D) All of the above. Show Answer Correct Answer: D) All of the above. 10. Plants obtain Fe in the form of- A) Ferric ions. B) Ferrous ion. C) FeSO4. D) Either ferric or ferrous ions. Show Answer Correct Answer: A) Ferric ions. 11. What is the role of mycorrhizal fungi in mineral nutrition? A) Root absorption. B) Photosynthesis. C) Nutrient storage. D) Gas exchange. Show Answer Correct Answer: A) Root absorption. 12. Which process requires ATP for nutrient uptake? A) Diffusion. B) Facilitated diffusion. C) Active transport. D) Mass flow. Show Answer Correct Answer: C) Active transport. 13. Species of rod-shaped Rhizobium has such relationship with the roots of several legumes such as A) Alfalfa. B) Sweet clover. C) Sweet pea. D) All the above. Show Answer Correct Answer: D) All the above. 14. What is the ideal temperature range for photosynthesis? A) 50 to 60$^\circ$C. B) 0 to 10$^\circ$C. C) 25 to 35$^\circ$C. D) 100 to 110$^\circ$C. Show Answer Correct Answer: C) 25 to 35$^\circ$C. 15. The primary elements that are required by the plants in large quantities are ..... , ..... and ..... A) N, Mg, Fe. B) Ca, Mg, Mn. C) Mg, Ca, S. D) N, P, K. Show Answer Correct Answer: D) N, P, K. 16. Main role of minor elements is to act as A) Constituent of amino acids. B) Constituent of hormones. C) Binder of cell structure. D) Cofactor of enzymes. Show Answer Correct Answer: D) Cofactor of enzymes. 17. Greyspots of oat are caused by deficiency of A) Fe. B) Mn. C) Zn. D) Cu. Show Answer Correct Answer: B) Mn. 18. How many of the following organisms not fix the atmospheric nitrogen in free living condition? Frankia, Anabaena, Rhodospirillum, Bijernickia, Rhizobium, Azotobacter, Nostoc. A) 4. B) 2. C) 3. D) 5. Show Answer Correct Answer: B) 2. 19. What is the effect of very high temperatures on photosynthesis? A) Increases the rate of photosynthesis. B) Has no effect on photosynthesis. C) Denatures the essential enzymes prohibiting photosynthesis. D) Deactivates the enzymes affecting photosynthesis. Show Answer Correct Answer: C) Denatures the essential enzymes prohibiting photosynthesis. 20. The criteria of essentiality of elements was given by the scientists ..... and ..... A) Mengel and Kirkby. B) Dixon and Joly. C) Hatch and Slack. D) Arnon and Stout. Show Answer Correct Answer: D) Arnon and Stout. 21. Which element was identified as the seventeenth essential element for plants in 1980? A) Zinc. B) Nickel. C) Copper. D) Manganese. Show Answer Correct Answer: B) Nickel. 22. Choose the correct statement(s)-I. Solution culture / Hydrophonics contains all essential minerals except one, the usefulness of which is to be determinedII. Na, Si, Co and Selenium are beneficial element required by higher plantsIII. Zn is the activator of nitrogenases while Mo is the activator of alcohol dehydrogenaseIV. Zn is needed for auxin synthesis A) All. B) I, II, III. C) None. D) I, II, IV. Show Answer Correct Answer: D) I, II, IV. 23. Which one is the major constituent of proteins, nucleic acids, vitamins and hormones A) P. B) K. C) S. D) N. Show Answer Correct Answer: D) N. 24. Which group of three micronutrient elements is required for both photosynthetic and mitochondrial electron transport A) Mn, Co, Ca. B) Co, Ni, Mo. C) Ca, K, Na. D) Cu, Mn, Fe. Show Answer Correct Answer: D) Cu, Mn, Fe. 25. To the plants soil is not the source of- A) C. B) H. C) O. D) All. Show Answer Correct Answer: A) C. 26. Micronutrients are needed in very small amount because- A) They mainly function as cofactors of enzyme. B) Most of them are mobile in the plants. C) Only meristems need these nutrients. D) They play minor role in plant health. Show Answer Correct Answer: A) They mainly function as cofactors of enzyme. 27. Deficiency symptoms of nitrogen and potassium are visible first in A) Young leaves. B) Senescent leaves. C) Buds. D) Roots. Show Answer Correct Answer: B) Senescent leaves. 28. What is the conclusion of Experiment V? A) Oxygen is given off during photosynthesis. B) Chlorophyll is necessary for photosynthesis. C) Carbon dioxide is necessary for photosynthesis. D) Light is necessary for photosynthesis. Show Answer Correct Answer: D) Light is necessary for photosynthesis. 29. Leaf transpiration mainly depends on A) Xylem structure. B) Root pressure. C) Stomatal opening degree. D) Number of root hairs. Show Answer Correct Answer: C) Stomatal opening degree. 30. Which of the following elements is responsible for maintaining turgor in cells? A) Magnesium. B) Calcium. C) Potassium. D) Sodium. Show Answer Correct Answer: C) Potassium. 31. During oxidative phosphorylation, H20 is the final electron acceptor. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 32. Q4) During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by A) Cytochrome. B) Leghaemoglobin. C) Carotene. D) Xanthophylls. Show Answer Correct Answer: B) Leghaemoglobin. 33. Bivalent ion known to help plants in synthesis of IAA is A) Ca2+. B) Zn2+. C) Mn2+. D) MoO22+. Show Answer Correct Answer: B) Zn2+. 34. What deficiency symptom is associated with Phosphorus? A) Purple or red leaves. B) Yellowing of leaves. C) Necrosis at leaf tips. D) Stunted growth. Show Answer Correct Answer: A) Purple or red leaves. 35. Nitrogen fixation in root nodules of Alnus is brought about by A) Frankia. B) Azorhizobium. C) Bradyrhizobium. D) Clostridium. Show Answer Correct Answer: A) Frankia. 36. Which is a false statement regarding macronutrients? A) Form plant structure. B) Become toxic in slight excess. C) Develop osmotic potential. D) Component of energy-related compounds. Show Answer Correct Answer: B) Become toxic in slight excess. 37. What is the importance of photosynthesis? A) Provides food for animals. B) Prevents greenhouse effects. C) Replenishes carbon dioxide in the atmosphere. D) Produces materials for protein and lipids formation. Show Answer Correct Answer: A) Provides food for animals. 38. What is the overall chemical reaction for photosynthesis? A) 6CO2 + 6H2O $\rightarrow$ C6H12O6 + O. B) 6CO2 + H2O $\rightarrow$ C6H12O6 + O2. C) CO2 + H2O $\rightarrow$ C6H12O6 + O2. D) 6CO2 + 6H2O $\rightarrow$ C6H12O6 + 6O2. Show Answer Correct Answer: D) 6CO2 + 6H2O $\rightarrow$ C6H12O6 + 6O2. 39. Transpiration through leaves occurs mainly through A) Leaf surface (primary) and stomata (secondary). B) Epidermis (primary) and root hairs (secondary). C) Stomata (primary) and leaf surface (secondary). D) Xylem (primary) and phloem (secondary). Show Answer Correct Answer: C) Stomata (primary) and leaf surface (secondary). 40. Crop plants absorb carbon in the form of- A) CO$_{2}$ from the air. B) Elemental carbon from the soil. C) Carbonates. D) CO$_{2}$ from the soil. Show Answer Correct Answer: A) CO$_{2}$ from the air. 41. What are the raw materials required for photosynthesis? A) Chlorophyll and sunlight. B) Protein and lipids. C) Carbon dioxide and water. D) Oxygen and glucose. Show Answer Correct Answer: C) Carbon dioxide and water. 42. Which micronutrient is crucial for chlorophyll synthesis? A) Manganese. B) Zinc. C) Iron. D) Copper. Show Answer Correct Answer: C) Iron. 43. Which one of the following elements in plants is not remobilised? A) Calcium. B) Potassium. C) Sulphur. D) Phosphorus. Show Answer Correct Answer: A) Calcium. 44. What is the main method by which plants acquire mineral nutrients? A) Active transport. B) Respiration. C) Transpiration. D) Photosynthesis. Show Answer Correct Answer: A) Active transport. 45. Which of the following is a by-product of photosynthesis? A) Oxygen. B) Carbon Dioxide. C) Glucose. D) Water. Show Answer Correct Answer: A) Oxygen. 46. Aspargine and Glutamine are: A) Imino acids. B) Amino acids. C) Protein. D) Amide. Show Answer Correct Answer: D) Amide. 47. Which one of the following elements is not an essential micronutrient for plant growth? A) Mn. B) Ca. C) Cu. D) Zn. Show Answer Correct Answer: D) Zn. 48. Component of nitrogenase and nitrate reductase is A) Co. B) Mo. C) Zn. D) Mn. Show Answer Correct Answer: B) Mo. 49. The most abundant element found in plants is A) Iron. B) Carbon. C) Manganese. D) Nitrogen. Show Answer Correct Answer: B) Carbon. 50. The enzyme nitrogenase is highly sensitive to the A) Heat. B) Molecular oxygen. C) Pressure. D) Temperature. Show Answer Correct Answer: B) Molecular oxygen. 51. The common nitrogen-fixer in paddy fields is A) Frankia. B) Azospirillum. C) Rhizobium. D) Oscillatoria. Show Answer Correct Answer: D) Oscillatoria. 52. An element which with the help of Na+ and K+, determines the solute concentration and anion-cation balance in cell is A) S. B) Mo. C) Cl. D) Zn. Show Answer Correct Answer: C) Cl. 53. When water molecules are attracted to water molecules, this is called ..... A) Cohesion. B) Adhesion. C) Capillary action. D) None of the answers are correct. Show Answer Correct Answer: A) Cohesion. 54. Which one is not a trace element / micronutrient- A) Mo. B) Mn. C) K. D) Cu. Show Answer Correct Answer: C) K. 55. ..... involves the transfer of an amino group from one amino acid to the keto group of a keto acid. A) Reductive amination. B) Ammonification. C) Transamination. D) Nitrogen fixation. Show Answer Correct Answer: C) Transamination. 56. Is the breakdown of glucose molecules to release energy. (Occurs after photosynthesis) A) Nitrate. B) Photosynthesis. C) Respiration. D) Chemotropism. Show Answer Correct Answer: C) Respiration. 57. Manganese is required for A) Chlorophyll synthesis. B) Plant cell wall formation. C) Photolysis of water in photosynthesis. D) Nucleic acid synthesis. Show Answer Correct Answer: C) Photolysis of water in photosynthesis. 58. The common BGA nitrogen-fixer in paddy fields is A) Frankia. B) Aulosira. C) Rhizobium. D) Azospirillum. Show Answer Correct Answer: B) Aulosira. 59. The enzyme nitrogenase is a ..... protein and catalyses the conversion of atmospheric nitrogen to ammonia. A) Mo-S. B) Mo-Fe. C) Mg-Ca. D) Fe-S. Show Answer Correct Answer: B) Mo-Fe. 60. During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning is prevented by: A) Cytochrome. B) Laghaemoglobin. C) Xanthophyll. D) Carotene. Show Answer Correct Answer: B) Laghaemoglobin. 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