This quiz works best with JavaScript enabled. Home > Soil Nutrition > Nutrients > Soil Nutrients – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Soil Nutrients Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Select the secondary macronutrients required by plants. A) N, P, K. B) C, O, H. C) Ca, Mg, S. D) Zn, Fe, Co. Show Answer Correct Answer: C) Ca, Mg, S. 2. Which of the following is not a Micro Nutrient A) Iron. B) Copper. C) Selenium. D) Magnesium. Show Answer Correct Answer: C) Selenium. 3. Which fertilizer is sourced from natural ingredients? A) Synthetic. B) Organic. C) Both. D) None of above. Show Answer Correct Answer: B) Organic. 4. In plant science a nutrient is "essential" if ..... A) It is necessary for plant growth. B) It is found on the periodic table. C) It is found in the soil. D) It is used by the human body. Show Answer Correct Answer: A) It is necessary for plant growth. 5. Which fertilizer can be applied anytime during the growing season? A) Synthetic. B) Organic. C) Both. D) None of above. Show Answer Correct Answer: A) Synthetic. 6. Which fertilizer is, typically, "slow-release"? A) Synthetic. B) Organic. C) Both. D) None of above. Show Answer Correct Answer: B) Organic. 7. Which one is a micronutrient? A) Sulfur. B) Nitrogen. C) Zinc. D) Calcium. Show Answer Correct Answer: C) Zinc. 8. Select the macronutrients required by plants. A) N, P, K. B) C, O, H. C) Ca, Mg, S. D) Zn, Fe, Co. Show Answer Correct Answer: A) N, P, K. 9. Weak stalks leading to lodging in cereals indicates a deficiency in ..... A) Potassium. B) Nitrogen. C) Phosphorus. D) None of above. Show Answer Correct Answer: A) Potassium. 10. Pale green or yellow plants due to lack of chlorophyll would indicate a deficiency in ..... A) Nitrogen. B) Phosphorus. C) Potassium. D) None of above. Show Answer Correct Answer: A) Nitrogen. 11. Nutrient deficiency can be defined as a condition where ..... A) The plant has too much of a certain nutrient. B) The plant cannot hold its own weight and, therefore, droops. C) The plant turns yellow. D) The plant is not getting enough of an essential nutrient. Show Answer Correct Answer: D) The plant is not getting enough of an essential nutrient. 12. In the atmosphere, energy from lightning causes nitrogen and oxygen to form ..... A) Nitrates. B) Fire flies. C) Shooting stars. D) Heat lightning. Show Answer Correct Answer: A) Nitrates. 13. Select the structural elements found in plants. A) N, P, K. B) C, O, H. C) Ca, Mg, S. D) Zn, Fe, Co. Show Answer Correct Answer: B) C, O, H. 14. This nitrogen fixing bacteria lives in the roots of beans, clovers and peas A) Ribosomes. B) Rhizobia. C) Radicals. D) Roots. Show Answer Correct Answer: B) Rhizobia. 15. Which of the following is a sign of nitrogen deficiency in plants A) Blue colour leaves. B) Purple colour leaves. C) Pale or Yellow colour leaves. D) No germination of seed. Show Answer Correct Answer: C) Pale or Yellow colour leaves. 16. The chemical symbol for phosphorus is ..... A) P. B) K. C) S. D) Ph. Show Answer Correct Answer: A) P. 17. Discoloured blue-purple leaves indicates a deficiency in ..... A) Nitrogen. B) Phosphorus. C) Potassium. D) None of above. Show Answer Correct Answer: B) Phosphorus. 18. The tendency of cereal crops to bend over so that they lie almost flat on the ground is called ..... A) Lodging. B) Bending. C) Distorting. D) Necrosis. Show Answer Correct Answer: A) Lodging. 19. Component of chlorophyll, amino acids, DNA and ATP are all functions of ..... A) Nitrogen. B) Potassium. C) Phosphorus. D) None of above. Show Answer Correct Answer: A) Nitrogen. 20. A deficiency in ..... causes whiptail in cauliflower A) Molybdenum. B) Zinc. C) Iron. D) Copper. Show Answer Correct Answer: A) Molybdenum. Next →Related QuizzesSoil Nutrition QuizzesSoil Nutrients Quiz 2Soil Nutrients Quiz 3 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books