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39 Cards in this Set
- Front
- Back
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the idea that the sporophyte generation and the gametophyte generation follow one another in an alternating fashion |
alternation of generations |
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haploid generation; produces gametes |
gametophyte generation |
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alternations of generations in which the sporophyte and the gametophyte generations have a different size, shape, or appearance. |
heteromorphic alternations of generations |
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A life cycle in which the sporophyte is more than the zygote, and the gametophyte is more than a gamete. The gametophyte and sporophyte alternate one another through time. |
Sporic life cycle |
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life cycles found in vascular plants are variations of the _________ life cycle |
sporic |
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vascular plants have a _________ alteration of generations |
heteromorphic |
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only the _________ generation is long-lived and has vascular tissue |
sporophyte |
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the sporophyte generation produces _________ on its leaves |
meiospores |
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a row of specialized cells around the sporangium of most ferns; plays a role in opening the sporangium and releasing spores |
annulus |
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collective term for the sepals |
calyx |
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flower containing a pistil, stamen, calyx and corolla |
complete flower |
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flower that has a pistil, but no stamens |
female flower |
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a stalk which supports the anther; part of the stamen |
filament |
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producing spores that are different in size and shape |
heterosporous |
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a flower that lacks one of a pistil, stamen, calyx or corolla or more than one |
incomplete flower |
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producing spores that are the same in size and shape |
homosporous |
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a flower which has stamens but no pistil |
male flower |
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spore produced by meiosis |
meiospores |
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a sporangium that produces microspores |
microsporangium |
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female cone in gymnosperms that produces seeds |
ovulate or seed cone |
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structure within the female ovary that contains the female gametophyte; develops into seed after fertilization |
ovule |
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flower having both female and male parts |
perfect flower |
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the tube that grows from the pollen grain to penetrate the ovule for fertilization |
pollen tube |
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transfer of pollen from male to female cones in gymnosperms, or from anther to stigma in flowering plants |
pollination |
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gametophyte generation of a fern |
prothallium |
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a group of sporangia in ferns |
sorus |
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spore-producing cell or structure in protists or plants |
sporangium |
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sticky, terminal end of the pistil where pollen is caught in pollination |
stigma |
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column-like part of the pistil that supports the stigma of the flower |
style |
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the __________ are usually grouped on the underside of mature leaves |
sporangia |
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is heart shaped and quite small; short-lived |
gametophyte |
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male cones are often __________, while females are _________ |
unnoticed, more prominent |
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flowers are __________ and ___________ |
heterosporous, oogamous |
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plants that produce seeds within a cone |
gynosperms |
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spores produced by the male cone of a pine tree is produced by: |
meiosis |
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pine cone seeds are produced in the ______ of the ________ cone |
ovule, female |
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pine cone seed is the : |
container for the fertilized egg |
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organ that produces the egg cell in the life cycle of the pine |
archegonium |
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what does a pistil consist of |
style, ovary, stigma |
