Leah Jones
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A quiz to review the key points from the first chapter of the textbook.

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Leah Jones
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Key Points Review Chapter 1

Key Points Review Chapter 1

Question 1 of 14

1

Most of the nutrients essential for growth are supplied to plants directly from the ___

Select one of the following:

  • Cosmic Radiation

  • Atmosphere

  • Humus

  • Rain Water

  • Soil Solution

Explanation

Question 2 of 14

1

Which of the following is (are) essential plant nutrients?

Select one of the following:

  • Sr

  • Al

  • Cu

  • Pb

  • All of the above

Explanation

Question 3 of 14

1

The lithosphere is made up of ___

Select one of the following:

  • Air

  • Rock

  • Plants and animals

  • Water

  • All of the above

Explanation

Question 4 of 14

1

The layers of contrasting material found when on digs a hole in the ground are called ___

Select one of the following:

  • Pedons

  • Pseudoliths

  • Horizons

  • Soil structure

  • Regoliths

Explanation

Question 5 of 14

1

A soil profile consists of (choose the best answer)

Select one of the following:

  • The sum of chemical and physical data known about a soil

  • The way a soil "feels"

  • The set of layers in a vertical cross-section of the soil

  • The general outline of a soil or groups of soil when viewed from the side

  • The spatial boundaries of a particular soil

Explanation

Question 6 of 14

1

"Subsoil" is generally equivalent to which soil horizon?

Select one of the following:

  • A

  • O

  • C

  • H

Explanation

Question 7 of 14

1

In a typical mineral soil in optimal condition for plant growth, approximately what percentage of the pore space would be filled with water and what percentage filled with air?

Select one of the following:

  • 10% water; 90% air

  • 90% water; 10% air

  • 50% water; 50% air

  • 25% water; 75% air

  • 25% water; 25% air

Explanation

Question 8 of 14

1

The amount of different sizes of mineral particles in a soil defines soil ___

Select one of the following:

  • Pore space

  • Profile

  • Texture

  • Solution

  • Personality

Explanation

Question 9 of 14

1

The water in the soil typically differs from pure water because soil water ___

Select one of the following:

  • Contains mineral nutrients

  • Is restrained in its flow by attraction to particle surfaces

  • Contains organic compounds

  • All of the above

  • None of the above

Explanation

Question 10 of 14

1

Except for some kinds of food, modern industry has made human dependence on soils a thing of the past.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 14

1

Most of the water in our rivers and lakes has come in contact with and been affected by soil.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 14

1

Plants can be grown without any soil.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 14

1

The mineral particles in soil consist of sand, silt, and clay.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 14

1

Most, if not all, of the nutrient supply stored in a fertile soil is in forms readily available to plants.

Select one of the following:

  • True
  • False

Explanation

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