Exam 28: Plants Without Seeds: From Water to Land

The main difference between nonvascular plants and vascular plants is that nonvascular plants

The small, closeable openings in leaves and stems that are used to regulate gas exchange are called _______.

The male sex organ in moss is known as the _______; the female sex organ is known as the _______.

Lycophyte-fern forests arose in the Devonian and persisted for _______ years.

Vascular plants are thought to be the result of a single evolutionary event: the evolution of a wholly new cell type, the tracheid. This cell type

All land plants produce _______ by mitosis and _______ by meiosis.

Discuss how the relationship between sporophytes and gametophytes changes as one moves from the first nonvascular plants to later nonseed vascular plants.

Use the following to answer questions : Refer to the diagram below. -Which letter in the diagram indicates the process of meiosis, A or B?

Which of the following characteristics helps distinguish the liverworts from the mosses?

One important consequence of the evolution of xylem was the development of a mechanism for

The moss gametophyte that develops after spore germination is a branched, filamentous structure called

Club mosses and horsetails

The evolutionary importance of plant tissue composed of tracheids is that it provides

Use the following to answer questions : Refer to the diagram below, showing alteration of generations in plants. -Is this plant homosporous or heterosporous?

Use the following to answer questions : Refer to the diagram below. -Are the gametes in the diagram haploid or diploid?

Compare and contrast the moss life cycle and the fern life cycle.

The first ferns appeared during the _______ period.

The sporophyte of a vascular plant is _______; the sporophyte of a nonvascular plant is _______.

Use the following to answer questions: Match the correct group from the list with the descriptions. -Originally thought to be evolutionarily ancient descendants of anatomically simple ancestors; have gametophytes that live below the surface of the ground and lack chlorophyll; are now considered to be highly specialized and to have evolved fairly recently.

Use the following to answer questions: Match the correct group from the list with the descriptions. -Exhibit basal growth; sometimes called the scouring rushes because the silica deposits in their cell walls made them useful for cleaning; have simple leaves that form distinct whorls around the stem.