Ch. 17, Plants
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20 terms
Terms | Definitions |
|---|---|
 spore | any of a variety of thick-walled life cycle stages capable of surviving unfavorable environmental conditions, reproductive cells that can develop into a multicellular individual without fusing with another cell. |
| seed plants | conifers & flowering plants, gymnosperm & angiosperm. |
| gymnosperms | a naked-seed plant, its seed is said to be naked because it is not enclosed in an ovary, life cycle dominated by sporophyte stage, vascular. |
| biodiversity | the variety of living things, encompassing genetic diversity, species diversity, and ecosystem diversity. decreases when species become extinct |
| abundant light and few animal predators | early plant life thrived due to this |
| angiosperms | a flowering plant, which forms seeds inside a protective chamber called an ovary, life cycle dominated by sporophyte stage, "container-seed". |
| needles | the leaf of a conifer |
| gametophyte | the multicellular haploid form in the life cycle of organisms undergoing alternation of generations; mitotically produces haploid gametes that unite and grow into sporophyte generation, includes mosses |
| pollinators | agent that brings the pollen to the female part of the plant to go through fertilization, bees |
| stomates | openings/pores in plants, gas exchange |
| seed dispersal | wind,animal fur, water, animal ingestion helping to disperse |
| carpel | the female structure consisting of the ovary (with the ovules and egg inside), the style and stigma. |
| bryophytes | non-vascular land plants, mosses, gametophytes, no xylem or phloem. |
| algae | a protist that produces its food by photosynthesis |
| swimming sperm | requires water to reach the egg, mosses |
| ferns | seedless vascular plants, swimming sperm, sporophyte. |
| vascular tissue | plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body. |
| fossil fuels | an energy-containing deposit of organic material formed from the remains of ancient organisms, ex) mosses. |
| sporophyte | the multicellular diploid form in the life cycle of organisms undergoing alternation of generations; results from a union of gametes and meiotically produces haploid spores that grow into the gametophyte generation, ferns, conifers, and flowering plants. |
| green algae | a member of a group of photosynthetic protists that includes chlorophytes and charophyceans, the closest living relatives of land plants. include unicellular, colonial, and multicellular species, have chloroplasts. same photosynthetic pigments, similar structures for making cell walls, and similar mechanism for forming the cell plate as plants do. |
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