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Questions and Answers
Which is not a macronutrient needed by plants for growth?
Which is not a macronutrient needed by plants for growth?
- Manganese (correct)
- Phosphorus
- Nitrogen
- Potassium
What are the main components of photosynthesis?
What are the main components of photosynthesis?
- Potassium and Calcium
- Nitrogen and Phosphorus
- Boron and Molybdenum
- Carbon, Hydrogen, and Oxygen (correct)
Why is a fertile soil not necessarily productive?
Why is a fertile soil not necessarily productive?
- As a result of limiting factors like drought (correct)
- Due to poor drainage and insects
- Due to the abundance of micronutrients
- Because of the lack of non-mineral nutrients
Which group of nutrients come from the atmosphere and water?
Which group of nutrients come from the atmosphere and water?
What is the process that converts carbon dioxide and water into glucose and oxygen?
What is the process that converts carbon dioxide and water into glucose and oxygen?
Which element is classified as a micronutrient needed by plants in smaller quantities?
Which element is classified as a micronutrient needed by plants in smaller quantities?
What is the name of the law in plant nutrition that suggests a plant's growth is limited by the nutrient in shortest supply?
What is the name of the law in plant nutrition that suggests a plant's growth is limited by the nutrient in shortest supply?
According to Liebig's Law of the Minimum, what happens once the supply of the most limiting nutrient is improved?
According to Liebig's Law of the Minimum, what happens once the supply of the most limiting nutrient is improved?
How many essential nutrients are required for plant growth and development?
How many essential nutrients are required for plant growth and development?
Which scientist is known for naming the law that a plant's growth is limited by the nutrient in shortest supply?
Which scientist is known for naming the law that a plant's growth is limited by the nutrient in shortest supply?
What happens if a plant receives all nutrients at an optimal level without any deficiencies or excesses?
What happens if a plant receives all nutrients at an optimal level without any deficiencies or excesses?
What principle suggests that if a deficient nutrient is supplied, yields may improve until another nutrient becomes the limiting factor?
What principle suggests that if a deficient nutrient is supplied, yields may improve until another nutrient becomes the limiting factor?
Which three macronutrients are most often managed by the addition of fertilizers to soils?
Which three macronutrients are most often managed by the addition of fertilizers to soils?
Which nutrients are most often found in sufficient quantities in most soils?
Which nutrients are most often found in sufficient quantities in most soils?
Which nutrients are considered primary nutrients from a management perspective?
Which nutrients are considered primary nutrients from a management perspective?
From a crop production standpoint, why are Nitrogen, Phosphorus, and Potassium considered primary nutrients?
From a crop production standpoint, why are Nitrogen, Phosphorus, and Potassium considered primary nutrients?
The ability of soils to supply secondary nutrients indefinitely is dependent upon which law?
The ability of soils to supply secondary nutrients indefinitely is dependent upon which law?
Continued crop removal of Calcium, Magnesium, and Sulphur requires replenishment because they act as:
Continued crop removal of Calcium, Magnesium, and Sulphur requires replenishment because they act as:
Which mechanism is the major process for the movement of positively charged nutrients to the root surface?
Which mechanism is the major process for the movement of positively charged nutrients to the root surface?
What negatively charged ion is mentioned in the text as one of the components of soil water?
What negatively charged ion is mentioned in the text as one of the components of soil water?
Which factor affects mass flow according to the text?
Which factor affects mass flow according to the text?
What negatively charged ion is NOT mentioned in the text as a component of soil water?
What negatively charged ion is NOT mentioned in the text as a component of soil water?
What is the process referred to as when some water and nutrients move below the root zone?
What is the process referred to as when some water and nutrients move below the root zone?
Which nutrient has a positive electrical charge when dissolved in soil water and does NOT move primarily through diffusion?
Which nutrient has a positive electrical charge when dissolved in soil water and does NOT move primarily through diffusion?
What are the two main phases involved in nutrient absorption and utilization in plants?
What are the two main phases involved in nutrient absorption and utilization in plants?
Which of the following is NOT a mechanism by which nutrients reach the surface of root hairs?
Which of the following is NOT a mechanism by which nutrients reach the surface of root hairs?
What is the primary driving force behind mass flow, moving water from soil pores into plant roots?
What is the primary driving force behind mass flow, moving water from soil pores into plant roots?
Why is root interception not considered a major mechanism for nutrients to reach the surface of plant roots?
Why is root interception not considered a major mechanism for nutrients to reach the surface of plant roots?
Which factor does NOT affect root interception according to the text?
Which factor does NOT affect root interception according to the text?
What percentage of the plant roots come in direct contact with the soil surface within soil aggregates?
What percentage of the plant roots come in direct contact with the soil surface within soil aggregates?
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