Exam 29: Microorganisms in Terrestrial Ecosystems

Actinorrhizae can benefit the plant by providing it with the products of

Filamentous fungi found in soils are able to form bridges across aggregates and facilitate nutrient transfer processes.

The stems and leaves of plants, called the ___________, provide a habitat for a wide variety of microorganisms.

The common building block of ___________ is the phenylpropene unit, which consists of a hydroxylated six-carbon aromatic benzene ring and a three-carbon linear side chain.

Porous geological structures below the plant root zone where water flows are known as glaciated subterranean lakes.

A unique feature of terrestrial filamentous fungi not found in aquatic fungi is

In bog soils, the decomposition rate of lignin-cellulose complexes is accelerated by the water-logged, predominately anoxic conditions.

In a mycorrhizal relationship, the fungal component can assist in providing phosphorus and water to the plant. The plant in turn provides the fungus with

Ti plasmids in the species Agrobacterium tumefaciens

When rhizobia approach a plant root, the plant initially responds by