When Desert or Semidesert Soils Are Irrigated for Long Periods

question 11

Multiple Choice

When desert or semidesert soils are irrigated for long periods of time, ____.

• A) the soil remains fertile and productive
• B) salt accumulates and lowers soil fertility
• C) salt accumulates and improves soil fertility
• D) the water becomes too silty to use

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Definitions:

Centrioles

Cylindrical structures found in most eukaryotic cells that play a critical role in cell division by helping to organize the mitotic spindle.

Microtubules

Cylindrical structures made of tubulin proteins that are part of the cytoskeleton in all eukaryotic cells, involved in cell shape, division, and transport mechanisms.

Kinesin

A type of motor protein that moves along microtubule filaments, transporting cellular cargo, crucial for cell division and intracellular transport.

Dynein

is a motor protein in cells which converts chemical energy into mechanical force, moving along microtubules and playing roles in cell division and transport of cellular cargo.