CH. 30

When you look at a pine or maple tree, the plant you see is a _____.

All seed plants _____.

The adaptation that made possible the colonization of dry land environments by seed plants is most likely the result of the evolution of _____.

Gymnosperms were most abundant during the _____.

In gymnosperms megaspores develop into _____ .

In pine, the embryo develops within the _____.

The major difference between angiosperms and gymnosperms comes from the _____.

Angiosperms are different from all other plants because only they have _____.

Unlike most angiosperms, grasses are pollinated by wind. As a consequence, some unnecessary parts of grass flowers have almost disappeared. Which of the following parts would you expect to be most reduced in a grass flower?

Human survival literally depends on the produce of _____.