The Absence of a Layered Structure in the Soil Pictured

question 35

Multiple Choice

The absence of a layered structure in the soil pictured below occurs because

• A)leaching is so strong that it removes the distinguishing features of each layer.
• B)swelling as the soil absorbs water and shrinking as it dries out removes the horizonation.
• C)calcification has caused caliche to be left behind in all of the horizons.
• D)volcanic ash has penetrated very deeply beneath the surface in this soil type.

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Definitions:

Anaphase I

A stage in the first division of meiosis where homologous chromosomes are separated and move to opposite ends of the cell.

Somatic Cell

Body cell; excludes cells that undergo meiosis and become sperm or eggs.

Chromosomes

Threadlike structures composed of DNA and proteins, containing the genetic information necessary for cell growth, division, and function.

Meiosis

A specialized type of cell division that reduces the chromosome number by half, leading to the production of haploid gametes in sexually reproducing organisms.