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15 Cards in this Set
- Front
- Back
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A group of dioecious seed plants that are trees with dichotomously veined leaves
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Ginkgo
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A group of dioecious seed plants with short trunks and compound leaves
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cycads
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A group of monoecious seed plants with simple leaves and non-motile sperm, including spruces, firs, pines, junipers
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conifers
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A group of seed plants with simple, opposite leaves and non-motile sperm
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Gnetales
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A shoot system that bears sporophylls (leaves with attached sporangia or seeds)
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cone/strobilus
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An adaptive feature of seeds
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dormancy mechanisms
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An embryo surrounded by nutritive tissue and enveloped by a protective layer
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seed
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An immature, endosporic, male gametophyte
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pollen grain
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Development of the gametophyte within the spore wall
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endospory
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Outer protective layer of a seed
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integument
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Stem with a single ring of vascular bundles
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eustele
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Structure in a pine tree that produces pollen grains
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microsporangium
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Technical term for wood
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secondary xylem
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The evolution of two types of spores, part of seed evolution
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heterospory
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Tissue that gives rise to secondary xylem and phloem
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vascular cambium
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