| A | B |
|---|
| phloem | the vascular tissue through which food moves in some plants |
| xylem | the vascular tissue through which water and nutrients move in some plants |
| seed | the plant structure that contains a young plant inside a protective covering |
| embryo | the young plant that develops from a zygote |
| cotyledon | a seed leaf that stores food |
| germination | the early growth stage of the embryo plant in a seed |
| stomata | the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move |
| transpiration | the process by which water is lost through a plant's leaves |
| cambium | the layer of cells in a plant that produces new phloem and xylem cells |
| root cap | a structure that covers the tip of a root, protecting the root from injury |
| gymnosperm | a plant that produces seeds that are not enclosed by a protective covering |
| cone | the reproductive structure of a gymnosperm |
| pollen | tiny particles produced by plants that contain the microscopic cells that later become sperm cells |
| ovule | a plant structure in seed plants that contain an egg cell |
| pollination | the transfer of pollen from male reproductive structures to female reproductive structures in plants |
| angiosperm | a plant that produces seeds that are enclosed in a protective structure |
| ovary | a protective structure in plants that encloses the developing seeds |
| flower | the reproductive structure of an angiosperm |
| petal | one of the colorful, leaflike structures of a flower |
| sepal | a leaflike structure that encloses the bud of a flower |
| stamen | the male reproductive parts of a flower |
| pistil | the female reproductive parts of a flower |
| fruit | the ripened ovary and other structures that enclose one or more seeds of an angiosperm |
| monocot | an angiosperm that has only one seed leaf |
| dicot | an angiosperm tha thas twon seed leaves |
| tropism | the growth response of a plant toward or away from a stimulus |
| hormone | a chemical that affects a plant's growth and development |
| auxin | the plant horomone that speeds up the rate of growth of plant cells |
