| Question | Answer |
| cuticle | the waxy, waterproof layer that covers the leaves and stems of some plants |
| tissue | a group of cells that perform a specific function in an organism |
| vascular tissue | the internal transporting tissue in some plants that is made up of tubelike structures |
| fertilization | the joining of a sperm cell and an egg cell |
| zygote | a fertilized egg, produced by the joining of a sperm and an egg |
| gamete | a sperm cell or an egg cell |
| 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 |
| germination | the early growth stage of the embryo plant in a seed |
| embryo | the young plant that develops from a zygote |
| 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 |
| 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 contains 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 |
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