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Chp 28 & 30 vocab
| Word | Definition |
|---|---|
| 1.) cuticle | a waxy or fatty and watertight layer on the external wall of epidermal cells |
| 2.) spore | a reproductive cell or multicellular structure that is resistant to environmental conditions and that can develop into an adult without fusion with another cell |
| 3.) seed | a plant embryo that is enclosed in a protective coat |
| 4.) xylem | the type of tissue in vascular plants that provides support and conducts water and nutrients from the roots |
| 5.) phloem | the tissue that conducts food (sugars, amino acids, and mineral nutrients) in vascular plants |
| 6.) sporophyte | in plants and algae that have alternation of generations, the diploid individual or generation that produces haploid spores |
| 7.) gametophyte | in alternation of generations, the phase in which gametes are formed; a haploid individual that produces gametes |
| 8.) alternation of generations | the alternation of sexual reproduction and asexual reproduction in certain plants and animals |
| 9.) rhizome | a horizontal, underground stem that provides a mechanism for asexual reproduction |
| 10.) fiddlehead | furled fronds of a young fern |
| 11.) frond | the leaf of a fern or palm |
| 12.) germinate | the beginning of growth or development in a seed, spore, or zygote, especially after a period of inactivity |
| 13.) seedling | a young plant grown from a seed |
| 14.) cone | in plants, a seed-bearing structure |
| 15.) deciduous | describes trees that lose their leaves at the end of the growing season |
| 16.) ovary | in flowering plants, the lower part of a pistil that produces eggs in ovules |
| 17.) cotyledon | the embryonic leaf of a seed |
| 18.) vein | in biology, a vessel that carries blood to the heart |
| 19.) parallel venation | the arrangement of veins in a leaf with parallet vein lines |
| 20.) net venation | the arrangement of veins in a leaf with a net like pattern of veins |
| 21.) antheridium | a reproductive structure that produces male sex cells in flowerless and seedless plants |
| 22.) archegonium | a female reproductive structure of small, nonvascular plants that produces a single egg and in which fertilization and development take place |
| 23.) sorus | a cluster of spores or sporangia |
| 24.) sporangium | a specialized sac, case, capsule, or other structure that produces spores |
| 25.) microspore | the smaller of the two types of spores produced by most plants that develops into the male gametophyte |
| 26.) megaspore | the larger of the two types of spores produced by heterosporous plants; develops into a female gametophyte |
| 27.) pollination | the transfer of pollen from the male reproductive structures (the anthers) to the tip of a female reproductive structure (the pistil) of a flower in angiosperms or to the ovule in gymnosperms |
| 28.) nectar | a sugar-containing fluid secreted by flowers to attract birds or insects for pollination |
| 29.) dormancy | a state in which seeds, spores, bulbs, and other reproductive organs stop growth and development and reduce their metabolism, especially respiration |
| 30.) vegetative reproduction | a type of asexual reproduction in which new plants grow from nonreproductive plant parts |
Created by:
sgcook123
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