This quiz works best with JavaScript enabled. Home > Agriculture > Soil Nutrition > Nutrients > Soil Nutrients – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Soil Nutrients Quiz 2 (28 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Swayback is a deficiency disease in sheep due to the lack of which element A) Cobalt. B) Copper. C) Zinc. D) Iron. Show Answer Correct Answer: B) Copper. 2. The primary function of this element is to contribute to the general health of the plant and encourage root growth and fruit formation A) Oxygen. B) Potash. C) Potassium. D) Nitrogen. Show Answer Correct Answer: C) Potassium. 3. ..... is needed for cell wall formation in a plant A) Calcium. B) Magnesium. C) Sulfur. D) None of above. Show Answer Correct Answer: A) Calcium. 4. What important role do soil microorganisms play in the Nitrogen Cycle? A) They convert organic N to a form that is usable by plants. B) They create sugars that feed plants. C) The filter pollutants in the soil. D) They provide root protection during harsh weather conditions. Show Answer Correct Answer: A) They convert organic N to a form that is usable by plants. 5. What is the definition of synthetic? A) Occurs naturally ("in nature"). B) Made by chemical synthesis (human-made). C) Made of plastic or metal. D) Organically sourced. Show Answer Correct Answer: B) Made by chemical synthesis (human-made). 6. What is the process where nitrogen is moved from the air to the soil to be used by plants and then returned to the atmosphere to be used again? A) Water cycle. B) Bacterial cycle. C) Ammonia cycle. D) Nitrogen cycle. Show Answer Correct Answer: D) Nitrogen cycle. 7. What two kinds of material make up soil? A) Dirt and worms. B) Dirt and minerals. C) Organic material and minerals. D) Topsoil and rocks. Show Answer Correct Answer: C) Organic material and minerals. 8. Dying growing tips and bushy stunted growth is caused by a deficiency in ..... A) Zinc. B) Copper. C) Iron. D) Boron. Show Answer Correct Answer: D) Boron. 9. A deficiency in ..... causes anaemia in pigs A) Iron. B) Copper. C) Boron. D) Zinc. Show Answer Correct Answer: A) Iron. 10. ..... is the only metal micronutient that does not exhibit multiple valences and not subjected to oxidation-reducation reactions in soil-plants system A) Manganese. B) Zinc. C) Iron. D) Molybdenum. Show Answer Correct Answer: B) Zinc. 11. Which of the following is NOT one of the micronutrients are required by plants? A) Zn. B) Cl. C) Fe. D) Co. Show Answer Correct Answer: D) Co. 12. You have a 40lb bag of fertilizer with an analysis of 16-7-2. How many lbs of P are in the bag? A) .8 lbs of P. B) 6.4 lbs of P. C) 28 lbs of P. D) 2.8 lbs of P. Show Answer Correct Answer: D) 2.8 lbs of P. 13. ..... is part of enzyme nitrate reductases and N-fixing nitrogenase. A) Iron. B) Zinc. C) Copper. D) Molybdenum. Show Answer Correct Answer: D) Molybdenum. 14. Blood meal is an organic source of which nutrient? A) N. B) K. C) Ca. D) P. Show Answer Correct Answer: A) N. 15. This element is essential for cell division and promotes plant maturation A) Phosphorus. B) Nitrogen. C) Oxygen. D) Potassium. Show Answer Correct Answer: A) Phosphorus. 16. 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. 17. ..... is important parts of plants' oxodation-reduction reactions A) Zinc. B) Boron. C) Iron. D) Copper. Show Answer Correct Answer: C) Iron. 18. This bacteria in the soil returns nitrogen to the atmosphere by converting nitrogen from nitrates into atmospheric nitrogen A) Hydrogen bacteria. B) Denitrifying bacteria. C) Oxygenizing bacteria. D) Nitrifying bacteria. Show Answer Correct Answer: B) Denitrifying bacteria. 19. Improves strength of the stems, increases disease resistance and helps plants overcome drought stress A) Phosphorus. B) Nitrogen. C) Calcium. D) Potassium. Show Answer Correct Answer: D) Potassium. 20. 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. 21. Wood ash is an organic source of which nutrient? A) P. B) Ca. C) N. D) K. Show Answer Correct Answer: D) K. 22. You have a 25lb bag of fertilizer with an analysis of 5-10-0. How many lbs of N are in the bag? A) 0 lbs of N. B) 1.25 lbs of N. C) 12.5 lbs of N. D) 2.5 lbs of N. Show Answer Correct Answer: B) 1.25 lbs of N. 23. Which is not a primary macronutrient? A) Nitrogen. B) Calcium. C) Potassium. D) Phosphorus. Show Answer Correct Answer: B) Calcium. 24. 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. 25. Which of the following is not a micronutrient? A) Calcium. B) Chlorine. C) Copper. D) Iron. Show Answer Correct Answer: A) Calcium. 26. The nutrient that stimulates growth of leaves and gives plants a rich green color A) Potassium. B) Nitrogen. C) Potash. D) Phosphorus. Show Answer Correct Answer: B) Nitrogen. 27. The chemical symbol for potassium is ..... A) N. B) Po. C) P. D) K. Show Answer Correct Answer: D) K. 28. 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 QuizzesAgriculture QuizzesSoil Nutrients Quiz 1 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books