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Questions and Answers
What is the approximate composition of the earth's crust in terms of minerals?
What is the approximate composition of the earth's crust in terms of minerals?
- Two-thirds quartz, one-fifth ferromagnesian minerals, and the rest aluminosilicates
- Two-thirds quartz, one-fifth aluminosilicates, and one-tenth ferromagnesian minerals
- Two-thirds aluminosilicates, one-fifth ferromagnesian minerals, and the rest quartz (correct)
- Two-thirds ferromagnesian minerals, one-fifth aluminosilicates, and the rest quartz
Which criteria determine the essentiality of a nutrient for plants?
Which criteria determine the essentiality of a nutrient for plants?
- The element must be present in large amounts in the soil
- The element must have multiple forms that plants can absorb
- The element must be commonly found in plant tissue
- A deficiency of the element makes it difficult for plant development, can be corrected by supply, and must perform a specific function in plants (correct)
In terms of nutrient essentiality, what does it mean if a deficiency makes it impossible for a plant to complete a vegetative or reproductive stage of development?
In terms of nutrient essentiality, what does it mean if a deficiency makes it impossible for a plant to complete a vegetative or reproductive stage of development?
- The plant will grow excessively tall
- The plant will produce more fruits
- The plant will not be able to reproduce (correct)
- The plant will develop large leaves
Which of these is not a macronutrient required by plants in large amounts?
Which of these is not a macronutrient required by plants in large amounts?
What are the chemical symbols for phosphorus and potassium ions that are absorbed by plants as macronutrients?
What are the chemical symbols for phosphorus and potassium ions that are absorbed by plants as macronutrients?
Which nutrient is considered a micronutrient for plant growth?
Which nutrient is considered a micronutrient for plant growth?
What is the function of Molybdenum as an essential micronutrient for plants?
What is the function of Molybdenum as an essential micronutrient for plants?
Which statement best describes the relationship between soil fertility and soil productivity?
Which statement best describes the relationship between soil fertility and soil productivity?
What ion form of Iron is absorbed by plants as an essential micronutrient?
What ion form of Iron is absorbed by plants as an essential micronutrient?
What is the significance of an element's specific function in plants for it to be considered essential?
What is the significance of an element's specific function in plants for it to be considered essential?
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