Exam 4: The Terrestrial Environment

In which season would the leaf area index (LAI)of a temperate deciduous forest be lowest?

Particle size of the soil directly influences the ________ and the surface area onto which water adheres.

The two physical factors that vary most in terrestrial environments are ________ and ________.

The wavelengths that make up the visible light spectrum are referred to as ________ radiation.

________ are soils that are low in organic matter and are found in arid and semiarid regions.

Generally, an ion with a ________ positive charge and ________ size will bind most strongly to a soil particle.

This process is a problem in agricultural areas where irrigation is prevalent.

Heavy rainfall results in heavy soil leaching and rapid chemical weathering.

________ particles control the water-holding capacity of soil and ion exchange.

In a temperate deciduous forest, photosynthetically active radiation (PAR)is greatest in

The lower the leaf area index (LAI)above the forest floor, the lower the quantity of light reaching the forest floor.

Each of the following is a challenge faced by a terrestrial plant EXCEPT

Which of the following is a common soil anion?

Which of the following is NOT considered an important function of soil?

Which of the following soils holds the most water?

________-sized particles are between 0.002 and 0.05 mm in diameter.

A collective sequence of horizontal layers in soil is a ________.

Soil is best described as an abiotic environment for plants.

The O horizon

Air is less dense than water and, as a result, decreases the effect of gravity on terrestrial organisms.