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Bio II Exam II (cont.)

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o1234567889q's version from 2017-11-04 18:42

chap 30

Question Answer
3 main steps in plant reproductionpollination, fertilization, and then speed dispersal
what is the multicellular diploid plant structurespotophyte
what does sporophyte doproduces spores through meiotic (asexual) division
The multicellular haploid plant structure is calledthe gametophyte
what is gametophyte formed from and what does it make formed from the spore and give rise to the haploid gametes
what is alternation of generationsthe fluctuation between diploid and haploid stages that occurs in plants
what is the dominant generation in angiospermsthe sporophyte (the large plant that we see)
explain gametophytes in angiospermsreduced in size and depend on the sporophyte for nutrients
what are the 3 Fs that the angiosperm life cycle is characterized byflowers, double fertilization, and fruits
sepalleaf-like structures enclosing petals
carpelthe female reproductive organ of a flower, consisting of an ovary, a stigma, and usually a style
Stamenthe male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament
Clusters of flowers are calledinflorescences
dioecioushaving the male and female reproductive organs in separate individuals
Major stages of the angiosperm life cycleGametophyte development (male and female), Pollination, Double fertilization, Seed development
male gametophytes in angiospermspollen
what do microspores divide to producemale gametophyte (pollen)
what does triploid cell develop intoendosperm
what is double fertilizationThis process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm)
what are the male and female gametophytes in angiospermsrespectively; pollen grain aka microgametophyte and embryo sac aka megagametophyte
Pollinationthe act of transferring pollen grains from the male anther of a flower to the female stigma
where is the microspore locatedinside the pollen grain
which cell division produces male and female gametophytesmeiosis
where does meiosis happen to produce the male gametophytein the anther to produce the microspore
where does meiosis happen to produce the female gametophytein the ovary to produce the megaspore
what does pistil refer tocarpel
which cell division produces sporesmeiosis
what is the microsporangiumpollen sac
what does the generative cell producetwo sperm cells (male gametes)
what does the vegetative cell doproduces an elongated pollen tube, a gametophytic cell, to deliver the male gametes to the embryo sac
_ploid sporophyte cells undergo which cell division to produce _ploid sporesDiploid sporophyte cells undergo meiosis to produce haploid spores
each spore undergoes _divisions to yield a whatEach spore goes through mitotic divisions to yield a multicellular, haploid gametophyte
_divisions within the gametophyte are required to produce _Mitotic divisions within the gametophyte are required to produce the gametes
what results from the fusion of two gametesThe diploid sporophyte
which multicellular generation is haploidgametophyte
which multicellular generation is diploidsporophyte
haploid reproductive cellsspores
which cell division are spores produced frommeiosis
where does meiosis occur in sporophytessporangia (sporangium)
when are spores released into the aironce they are produced in the sporangium
_ploid microspores are produced by _ploid microsporocyte through what cell divisionhaploid microspores are produced by diploid microsporocytes through meiosis
a single haploid spore undergoes what cell division to become whatmitosis to become a multicellular haploid gametophyte
male and female gametophyterespectively, pollen grain, and embryo sac
what is the diploid sporophyte generation calledthe flower
what three "F"s is the angiosperm life cycle characterized byflowers, double fertilization, and fruits
what does double fertilization producediploid zygote and triploid endosperm
after double fertilization, what turns into the seed and food around the seedovule turns into the seed, ovary turns into the food around the seed
what is radicleembryonic root of the plant
plumulethe part of a seed embryo that develops into the shoot bearing the first true leaves of a plant, growth does not occur until cotyledons have grown above ground
What is the function of the Coleorhizaprotects primary root (radicle)
coleoptilea sheath protecting a young shoot tip (plumule)
difference between food storage in monocot and dicot seedsmonocot food is stored in endosperm, dicot's in cotyledon
in which seed type is coleorhiza and coleoptiles presentmonocot
what do Fruit/seed dispersal mechanisms includewater, wind, animals(squirrels)
imbibitionwhen a dry seen absorbs water
what is testaouter seed coat
what stimulates the breaking of the testainbibition
steps of seed germinationimbibition, radicle emerges, shoot, embryo develops into sporophyte
hypocotylembryonic stem
epigeal vs. hypogeal germinationabove vs below ground
hypocotyl vs epicotylhypo is below epi, epi pushes plumule above ground, hypo pushes seed above ground, epi is above cotyledons, plumule is above epi
biotic pollinatorsinsects, birds, bats
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