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Biology
WCHS Biology Chapter 22
| Word | Definition |
|---|---|
| Antheridium | male reproductive structure in which sperm develop |
| Archegonium | female reproductive structure in which eggs develop |
| Strobilus | compact cluster of sporebearing leaves produced by some non-seed vascular plant |
| Prothallus | fern gametophyte |
| Rhizome | thick, underground stem of a fern and other vascular plants; often functions as an organ for food storage |
| Sorus | clusters if sporangia usually found on the surface |
| Pollen Grain | in seed plants, structure in which male gametophyte develops; consists of sperm cells, nutrients, and a protective outer covering |
| Ovule | in seed plants, the sporophyte structure surrounding the developing female gametophyte; forms the seed after fertilization |
| Embryo | earliest stage of growth and development of both plants and animals; differences and similiarities among embryos can provide evidence of evolution. the young diploid sporophyte of a plant |
| Cotyledon | structure of seed plant embryo that stores or absorbs food for the developing embyro |
| Fruit | seed-containing ripened ovary of an anthophyte flower; may be fleshy or dry |
| Deciduous Plant | plants that drop all of their leaves each fall or when water is scarce or unavailable; an adaptation for reducing water loss when water is unavailable |
| Monocotyledon | class of anthophytes that have one seed left |
| Dicotyledon | class of anthophytes that have two seed leaves |
| Annual | anthophyte that lives for one year or less |
| Biennial | anthophyte that has a life span of two years |
| Perennial | anthophtye that lives for several years |
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dmoudy
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