The Evolution of Seed Plants

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Charophyte green algae

Mosses

Ferns

Gymnosperms

Angiosperms

Slide 45

You should now be able to:

Explain why pollen grains were an important adaptation for successful reproduction on land.

List the four phyla of gymnosperms.

Describe the life history of a pine; indicate which structures are part of the gametophyte generation and which are part of the sporophyte generation.

Slide 46

You should now be able to:

Identify and describe the function of the following floral structures: sepals, petals, stamens, carpels, filament, anther, stigma, style, ovary, and ovule.

Explain how fruits may be adapted to disperse seeds.

Diagram the generalized life cycle of an angiosperm; indicate which structures are part of the gametophyte generation and which are part of the sporophyte generation.

Describe the current threat to plant diversity caused by human population growth.