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20 Cards in this Set
- Front
- Back
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conifer
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cone-bearing gymnosperms
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cycad
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a are slow-growing and long-lived gymnosperm that have retained flagellated sperm
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deciduous
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trees which drop their leaves each fall
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dichotomous venation
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the pattern of veins in ginkgo leaves
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dioecious
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types of plants in which male and female reproductive structures reside on separate plants.
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double fertilization
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fertilization in which two sperm cells enter the ovule; one fertilizes the egg and the other fertilizes another cell within the ovary
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ginkgo
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dioecious gymnosperms with motile sperm, with only one species remaining- Ginkgo bilob
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gnetophyte
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an unusual group of gymnosperms consisting of Weltitschia, Ephedra, and Gnetum, which serve an important role in understanding the evolution of angiosperms.
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gymnosperm
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a non-flowering seed plant
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megagametophyte
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female gametophyte in non-flowering seed plants
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microgametophyte
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male gametophytes in non-flowering seed plant
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monoecious
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types of plants in which male and female reproductive structures reside on the same plant.
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ovary
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female structure of a plant which contains ovules
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ovule
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he fleshy solid mass of a seed plant that contains a haploid megaspore
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perennial
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plants which live and reproduce year after year
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pollen
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the male microspore of a seed plant produces sperm within this structure
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pollen tube
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the structure through which the pollen grain travels to the egg after it lands on the female structure of a plant
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seed
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a fertilized mature ovule
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seed coat
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developed from the integuments in the ovule
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sporophytic tissue
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the tissue present in seed plants that surrounds and nourishes the gametophy
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