Chapter 15, Problem 18RQ

The waxy layer that covers aerial parts of plants is the (a) cuticle (b) archegonium (c) protonema (d) stoma (e) thallus

Name and briefly explain the factors that affect soil formation.

Roots that enable a plant to grow on another plant are called.______ epiphytic roots prop roots adventitious roots aerial roots

Many plants that produce nodules for nitrogen-fixing bacteria are common on disturbed sites. Explain how these plants might simultaneously compete with and facilitate other plant species.

For an element to be regarded as essential, all of the following criteria must be met, except: No other element can perform the function The element is directly involved in plant nutrition The element is inorganic The plant cannot complete its lifecycle without the element.