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Soil Science Specializations Quiz

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Questions and Answers

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?

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?

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?

Manganese Signup and view all the answers

What are the chemical symbols for phosphorus and potassium ions that are absorbed by plants as macronutrients?

H2PO4- and K+ Signup and view all the answers

Which nutrient is considered a micronutrient for plant growth?

Zinc Signup and view all the answers

What is the function of Molybdenum as an essential micronutrient for plants?

Aids nitrogen fixation in plants Signup and view all the answers

Which statement best describes the relationship between soil fertility and soil productivity?

Soil fertility refers to the ability of soil to support plant growth, while soil productivity refers to soil nutrients content Signup and view all the answers

What ion form of Iron is absorbed by plants as an essential micronutrient?

Fe++ Signup and view all the answers

What is the significance of an element's specific function in plants for it to be considered essential?

It aids in maintaining osmotic balance or other critical processes in plants Signup and view all the answers