The zone of soil that surrounds the roots and contains a variety of organic exudates is called the
A) mycorrhizae.
B) rootsphere.
C) rhizosphere.
D) geosmin.
E) biosphere.

Question

Quizplus · Accepted Answer

The rhizosphere is the zone of soil that surrounds the roots of a plant and contains a variety of organic exudates released by the plant as well as microorganisms. It is an area of high microbial activity and nutrient cycling, which helps to support plant growth and health. The other options are not accurate descriptions of this phenomenon. Mycorrhizae refers specifically to the symbiotic association between fungi and plant roots, while rootsphere and biosphere are not commonly used terms in this context. Geosmin is a compound responsible for the earthy smell of soil but is not related to the rhizosphere.

The Zone of Soil That Surrounds the Roots and Contains