| A | B |
|---|
| plant | multicellular autotroph in which the embryo develops within the female gametophyte |
| vascular tissue | system of tube-shaped cells that branches throughout a plant and transports water, mineral nutrients, and organic molecules |
| lignin | chemical that hardens certain plant cell walls |
| cuticle | waxy coating on the leaves and other aboveground parts of plants that helps the plant retain water |
| stomata | microscopic pores in a leaf's surface |
| ovary | in flowering plants, protective organ inside a flower that bears seeds |
| gametophyte | haploid generation of a plant; produces gametes |
| sporophyte | diploid generation of a plant; produces spores |
| alternation of generations | alternation between gametophyte and sporophyte in the life cycle of a plant |
| bryophyte | plant, such as a moss, lacking lignin-hardened vascular tissue |
| pteridophyte | member of a group of seedless vascular plants with lignin-hardened support tissues that includes ferns |
| gymnosperm | plant that bears seeds that are not enclosed in an ovary |
| pollen | much-reduced male gametophyte of seed plants that contains cells that develop into sperm |
| seed | plant embryo packaged along with a food supply within a protective coat |
| ovule | structure in seed plants in which the female gametophyte develops |
| angiosperm | flowering plant |
| flower | specialized plant shoot that functions in reproduction; unique to angiosperms |
| stamen | male reproductive organ of a flower ( |
| carpel | : female reproductive organ of a flower ( |
| endosperm | nutrient-storing tissue that nourishes the developing embryo of a plant |
| fruit | ripened ovary of a flower |
