This quiz works best with JavaScript enabled. Home > Soil Nutrition > Nutrients > Soil Nutrients – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Soil Nutrients Quiz 3 (18 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is NOT one of the micronutrients are required by plants? A) Zn. B) Fe. C) Cl. D) Co. Show Answer Correct Answer: D) Co. 2. You have a 40lb bag of fertilizer with an analysis of 16-7-2. How many lbs of P are in the bag? A) 6.4 lbs of P. B) .8 lbs of P. C) 28 lbs of P. D) 2.8 lbs of P. Show Answer Correct Answer: D) 2.8 lbs of P. 3. ..... is part of enzyme nitrate reductases and N-fixing nitrogenase. A) Molybdenum. B) Zinc. C) Iron. D) Copper. Show Answer Correct Answer: A) Molybdenum. 4. Blood meal is an organic source of which nutrient? A) N. B) P. C) K. D) Ca. Show Answer Correct Answer: A) N. 5. This element is essential for cell division and promotes plant maturation A) Potassium. B) Nitrogen. C) Oxygen. D) Phosphorus. Show Answer Correct Answer: D) Phosphorus. 6. Which of the following are other beneficial micronutrients? A) Cobalt. B) Nickel. C) Vanadium. D) All of the above. Show Answer Correct Answer: D) All of the above. 7. ..... is important parts of plants' oxodation-reduction reactions A) Iron. B) Zinc. C) Copper. D) Boron. Show Answer Correct Answer: A) Iron. 8. This bacteria in the soil returns nitrogen to the atmosphere by converting nitrogen from nitrates into atmospheric nitrogen A) Hydrogen bacteria. B) Oxygenizing bacteria. C) Nitrifying bacteria. D) Denitrifying bacteria. Show Answer Correct Answer: D) Denitrifying bacteria. 9. Improves strength of the stems, increases disease resistance and helps plants overcome drought stress A) Nitrogen. B) Phosphorus. C) Calcium. D) Potassium. Show Answer Correct Answer: D) Potassium. 10. The three most important mineral nutrients for plants are ....., ....., and ..... A) Hydrogen, oxygen, and water. B) Nitrogen, phosphorus, and potassium. C) Phosphorus, potash, and salt. D) Phosphorus, fertilizer, and bacteria. Show Answer Correct Answer: B) Nitrogen, phosphorus, and potassium. 11. Wood ash is an organic source of which nutrient? A) N. B) P. C) K. D) Ca. Show Answer Correct Answer: C) K. 12. You have a 25lb bag of fertilizer with an analysis of 5-10-0. How many lbs of N are in the bag? A) 1.25 lbs of N. B) 2.5 lbs of N. C) 12.5 lbs of N. D) 0 lbs of N. Show Answer Correct Answer: A) 1.25 lbs of N. 13. Which is not a primary macronutrient? A) Calcium. B) Nitrogen. C) Potassium. D) Phosphorus. Show Answer Correct Answer: A) Calcium. 14. Nutrient toxicity 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: A) The plant has too much of a certain nutrient. 15. Which of the following is not a micronutrient? A) Iron. B) Copper. C) Calcium. D) Chlorine. Show Answer Correct Answer: C) Calcium. 16. The nutrient that stimulates growth of leaves and gives plants a rich green color A) Nitrogen. B) Potassium. C) Phosphorus. D) Potash. Show Answer Correct Answer: A) Nitrogen. 17. The chemical symbol for potassium is ..... A) K. B) P. C) Po. D) N. Show Answer Correct Answer: A) K. 18. Which fertilizer, typically, has higher numbers in its fertilizer analysis? A) Synthetic. B) Organic. C) Both. D) None of above. Show Answer Correct Answer: A) Synthetic. ← PreviousRelated QuizzesSoil Nutrition QuizzesSoil Nutrients Quiz 1Soil Nutrients Quiz 2 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books