Term
| Layers of gymnosperm leaf: |
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Definition
-cuticle
-epidermis
-hypodermis (made of sclerenchyma) |
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Term
| Adaptations for arid climates |
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Definition
| cuticle/epi/hypodermis; sunken stomata, |
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Term
| Interior structure of leaf |
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Definition
mesophyll=uniform, no palisade/spongy mesophyll
mesophyll forms layers w/ air space above/below along interior of hypoderm;
ducts secrete resin in response to wounding, etc
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Term
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Definition
| found @ center; surrounded by transfusion tissue |
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Term
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Definition
| woody perennial plants with lateral meristems and secondary growth |
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Term
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Definition
tracheids and ray parenchyma, and contains no vessels;
some trachieds more for support than transport |
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Term
| Phloem consists primarily of |
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Definition
| sieve cells and parenchyma |
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Term
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Definition
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Term
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Definition
| hardwood (usually more dense) |
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Term
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Definition
Bear micro/megasporangia;
smaller=microspores; usually lower, so pollinated by wind |
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Term
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Definition
has two microspore moms;
meiosis to 4 microspores
mitosis to 4 winged pollen grain
blown to pollinate |
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Term
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Definition
2 mega spores;
ext cells of ovule=integuement
int=nucellus tissue |
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Term
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Definition
small hole where outer tissue doesn't meet;
pollen tube grows through nucellus (up to 6 mos) and eventually pollen goes through here to fertilize ovary |
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Term
| While pollen tube forming: |
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Definition
| generative cell divides; forms a spermatogenous cell and a sterile cell |
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Term
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Definition
divides again to produce two sperm;
one unites with w/ egg, other disintegrates
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Term
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Definition
no ovary or ovary wall;
integument develops into the seed coat |
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