BSC2011 EXM 3 VOCAB

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Last updated 7:13 PM on 2/27/25
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27 Terms

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Angiosperms
Plants that produce flowers and have seeds in a vessel, excluding pines, cypress, and spruces.
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Antheridium
The male reproductive structure that produces haploid sperm.
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Archegonium
The female reproductive organ that produces haploid eggs.
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Gametophyte
The multicellular haploid phase that produces gametes.
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Gymnosperms
Plants known as 'naked seed' plants that do not produce flowers, including pines, cypress, and spruces.
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Heterosporous
A plant that produces two types of spores: megaspores for female gametophytes and microspores for male gametophytes.
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Homosporous
A plant that produces only one type of spore that develops into a gametophyte with both male and female organs.
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Megasporangium
A sporangium (2n) that produces megaspores.
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Megasporocyte
Diploid cells within the megasporangium that produce the haploid female gametophyte via meiosis.
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Megaspore
A haploid spore that produces the female gametophyte.
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Microsporangium
A sporangium (2n) that produces microspores.
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Microsporocyte
Diploid cells within the microsporangium that produce the haploid male gametophyte via meiosis.
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Microspore
A haploid spore that produces the male gametophyte.
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Monoecious
A term meaning 'one house,' referring to plants with both male and female reproductive organs.
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Dioecious
A term meaning 'two houses,' referring to plants with male and female reproductive organs on separate plants.
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Bryophytes
A phylum of nonvascular plants that includes liverworts, mosses, and hornworts.
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Pollen cone
Gymnosperm male cones where microsporangia are located.
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Ovulate cone
Gymnosperm female cones where megasporangia are located.
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Rhizoid
Hair-like extensions in non-vascular seedless plants that anchor the plants to the ground.
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Sori
A cluster of sporangia located on the underside of some seedless vascular plants.
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Sporangium
A multicellular organ in seedless plants where meiosis occurs and haploid cells develop.
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Spore
A haploid cell that divides by mitosis to develop into the haploid adult.
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Sporophyll
Woody leaves found on gymnosperms that contain the sporangia.
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Sporophyte
The multicellular diploid phase that produces spores.
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Strobilus
A cone-like structure made up of sporophylls.
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Thallus
A simple vegetative body not differentiated into true leaves, stems, or roots.
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Tracheids
The dominant xylem cells in gymnosperms that transport water throughout the plant.