In order to be classified as a green plant, an organism should be eukaryotic, have double-membraned chloroplasts, cell walls, and go through the process of . Land plants likely evolved from .
Plants have a life cycle that is called the alternation of generations. The two phases of this life cycle are the diploid stage and the stage.
A plant structure that contains a full set of paired chromosomes is called a .
There are two key transport tissues in plants. transports water from the roots to the rest of the plant, while phloem transports sugar and nutrients.
Match the term on the left to its definition on the right.

6. Angiosperma. Has vascular tissue, but does not use seeds to reproduce
7. Fernb. Reproduces using cones
8. Mossc. Has no vascular tissue and uses spores to reproduce
9. Gymnospermd. Reproduces by using flowers to attract pollinators
Respond to the following based on your reading.

The earliest land plants were liverworts, mosses and ferns. Using the information that you learned in the section, why do you think that these plants were successful in the humid and moist ancient environment? What about these plants makes them unable to thrive in areas with drier climates today? What makes angiosperms and gymnosperms more successful in these climates?