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41 Cards in this Set
- Front
- Back
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a spore is the first cell of ______ generation
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gametophyte
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the first cell of the gametophyte generation is....
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the spore
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a spore mother cell is haploid or diploid
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diploid
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the zygote belongs to the ______ generation
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sporophtye
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the transition from a gametophyte to a sporophyte generation occurs as a result of _______
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fertilization
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sporophyte is (haploid/diploid) and gametophyte generation is (haploid/diploid)
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sporophyte - diploid
gametophyte - haploid |
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fertilization results in...
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the gametophyte generation becoming the sporophyte generation
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meiosis results in....
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the sporophyte generation becoming the gametophyte generation
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the transition from a sporophyte to a gametophyte generation occurs as a result of...
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meiosis
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sori are...
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spore producing structures located on a fern
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rhizome
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the udnergound stem that the fern's root system develops from
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homosporous
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when identical size spores are produced that germinate into bisexual gametophytes.
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seedless vascular plants contain...
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xylem and phloem
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spores are produced by the fern sporophyte by...
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meiosis
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spores belong to the __________ generation
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gametophyte
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gametes are produced by...
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mitosis
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the fern egg and sperm chambers are (haploid/diploid)
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haploid
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heterosporous
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where two different size spores are produced
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seed plants are ____________ while seedless plants are _______
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heterosporous/homosporous
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microspores and megaspores are produced by...
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meiosis
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the female angiosperm gametophyte will be reduced to...
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8 nuclei and 7 cells
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the female angiosperm gametophyte is (micro/megascopic)
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microscopic
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the male angiosperm gametophyte is reduced to...
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3 nuclei, 2 cells
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the male angiosperm gametophyte is (micro/megascopic)
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microscopic
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name the different parts of the pistol
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top is stigma, middle is style, bottom is ovary with 10 ovules
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a cross cut of the anther will show...
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many microspore mother cells (2n)
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the microspore mother cell (2n) undergoes _________ to produce a tetrad of microspores (n)
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meiosis
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a germinating pollen grain has...
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2 sperm and a tube nucleus
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the megaspore mother cell in the ovules is (n/2n)
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diploid
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how does the one nucleus in the megaspore mother cell in the ovule become 8 nuclei?
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it undergoes nuclear mitosis many times. it goes from 1 - 2 - 4 - 8 nuclei and then becomes the mature embryonic sac
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describe the mature embryonic sac
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it is the female gametophyte with 7 cells and 8 nuclei. the antipodals are 3 cells on top (n). the polar nuclei are in the middle (n) (1 cell with 2 nuclei). the synergids (n) and the egg (n) are on the bottom - the egg is between the synergids
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the primary endosperm nucleus is...
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3n and in the middle of the mature embryonic sac
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the spores undergo ______ to become _______
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mitosis. multicellular gametophytes (n)
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the zygote is _______ and causes it to become part of the __________ generation
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fertilized. sporophyte
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the cells in the sori undergo _______ to become ________
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meiosis. spores.
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microspores and megaspores are produced by..
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meiosis
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does pollination or fertilization occur first in flowering plants?
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pollination
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what part of the pistil does an angiosperm fruit develop?
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the ovary
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synonym for the embryo sac
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female gametophyte
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what cells in the embryo sac are involved in double fertilization?
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egg, sperm, polar nuclei
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the fern gametophyte is (micro/macroscopic)
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macroscopic
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