Evaluate

question 100

Short Answer

Evaluate:

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Definitions:

Humus

Organic matter in various stages of decomposition in the soil; gives soil a dark brown or black color.

Prop Root

An adventitious root that arises from the stem and provides additional support for a plant such as corn.

Buttress Root

A bracelike root at the base of certain trees that provides upright support.

Pneumatophore

Roots that extend up out of the water in swampy areas and are thought to provide aeration between the atmosphere and submerged roots.