| Spores | Seedless vascular plants use ____ to reproduce. |
| Woody | A stem that produces bark is ________ |
| Water | A starting material for photosynthesis that plants draw in through their roots. |
| Embryo | A zygote develops into a/an ________. |
| Perennials | Flowering plants that live for more than two years. |
| Cambium | In a stem, the layer of cells that divides to produce new xylem and phloem. |
| Chlorophyll | The primary pigment in leaves is _____. |
| Conifer | The most common type of gymnosperm. |
| Dicot | Has two seed leaves |
| Cone | The reproductive structure of a conifer. |
| Photoperiodism | A plant's response to seasonal changes in the length of night and day. |
| Germination | When an embryo begins to grow and push out of the seed. |
| cotyledon | A seed leaf that sometimes stores food. |
| Wort | Old English word that means plant. |
| Pollination | The transfer of pollen from the male reproductive structure to the female reproductive structure. |
| Stomata | Small opening on the surface of most leaves through which gases can move |
| Gymnosperm | A plant that produces seeds that are not enclosed in a protective fruit. |
| Fruit | Seeds on angiosperm are enclosed in a _____. |
| Vacuole | A storage sac in plant cells. A plant wilts when too much water has left its ______. |
| Zygote | When fertilization occurs, a _____ forms. |
| Sepals | Leaf-like structures that enclose a flower bud. |
| Sunlight | The energy source that powers photosynthesis. |
| Oxygen | A product of photosynthesis which we breath in is ____ |
| Stamen | The male part of a flower. |
| Dormancy | A period when an organism growth or activity stops. |
| cuticle | A waxy waterproof coating on leaves that keeps them from drying out. |
| Tropism | A plant's growth towards or away from a stimulus. |
| Pistil | The female part of a flower. |
| Herbaceous | A soft, green stem is _______. |
| Monocot | An angiosperm that has parallel veins. |
| Transpiration | The process by which water evaporates from a plants leaves |
| Chloroplast | The cell part that contains a green pigment and is the site of photosynthesis. |
| Rhizoids | Mosses are anchored by root like structures called _____. |
| Hydroponics | A method in which plants are grown in solutions of nutrients. |
| Fern | A common seedless vascular plant. |
| Angiosperm | A flowering plant that produces seeds in a protective structure. |
| Xylem | Vascular tubes that carry water up from the roots are ______. |
| Phloem | Vascular tubes that carry food from the leaves to the rest of the plant are ______. |
| Pollen | ______ is produced by a male cone. |
| Anther | Pollen is produced in the ____ of a flower. |
| Ovary | The _______ of a flower contains one or more ovule. This is where the seed develops. |
| Ovule | The plant structure that contains an egg cell |
| Annuals | Flowering plants that complete their life cycle in one growing season |
| Auxin | A plant hormone that speeds up the rate of growth of plant cells. |
| Seed | A structure that contains a plant embryo inside a protective covering |
| Cap | The root ______ protects the root from injury as the root grows through the soil |
