Exam 5: Roots and Soils

Cells of the root cap ease the growth of young roots through the soil by ________.

Good agricultural soils are granular soils with pore spaces that occupy which of the following percentages of the total volume of the soil?

Buds that develop on roots are referred to as

The arrangement of soil particles into groups called aggregates refers to

A unique feature of the pericycle is

In a soil profile, topsoil is called the

Parts of the pericycle and parenchyma between the arms of xylem and patches of phloem in young roots of many dicots and conifers become

In dicot roots the xylem is formed in discrete patches.

One unique function of the root cap is

Which of the following cells is relatively thin-walled?

When trees undergo root grafting with one another, an unfortunate result can be

The rootlike projections of parasitic plants that develop along their stems and penetrate the host plants' tissues are called

Soil water between field capacity and the permanent wilting point is called

The tissue adjacent to the endodermis toward the center of a root is the

This tissue (region) is present in monocot roots but absent in dicot roots.

Soil bacteria and fungi are important components of soil because they contribute to soil porosity and release useable minerals by decomposing organic matter.

The perception of gravity by a root takes place in

The perception of gravity by roots is aided by

Rhythmic cell divisions in young roots often

How does monocot root structure differ from dicot root structure?