| A | B |
|---|
| plant | multicellular eukaryote that produces its own food through photosynthesis |
| cuticle | in plants, the waxy layer that holds in moisture |
| stomata | pores in the cuticle of a plant through which gas exchange occurs (singluar: stoma) |
| vascular system | collection of specialized tissues in some plants that transports mineral nutrients up from the roots and brings sugars down from the leaves |
| lignin | complex polymer that hardens cell walls of some vascular tissues in plants |
| pollen grain | two-celled structure that contains the male form of the plant's gamete |
| seed | structure used by some land plants to store and protect the embryo |
| pollination | process by which seed plants become fertilized without the need for free-standing water |
| gymnosperm | seed plant whose seeds are not enclosed by fruit |
| angiosperm | seed plant whose embryos are enclosed by fruit |
| cone | reproductive structure of gymnosperms inside of which the female gamete is fertilized and seeds are produced |
| flower | reproductive structure of an angiosperm |
| fruit | fertilized and mature ovary of a flower |
| cotyledon | embryonic leaf inside of a seed |
| monocot | flowering plant whose embryos have one cotyledon |
| dicot | flowering plant whose embryos have two cotyledons |
| wood | fibrous material made of dead cells that are part of the vascular system in some plants |
| botany | study of plants |
| ethnobotany | study of how various cultures use plants |
| pharmacology | study of drugs and their effects on the body |
| alkaloid | chemical produced by plants that contains nitrogen, many of which are used in medicines |
