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What is an angiosperm?
seed in a vessel or coverd seed
what does angiosperm mean?
a seed borne in a vessel
Why do scientists classify plants and other organisms?
so they can tell each other which organism they are studing
How do scientists classify plants?
by function of taxonomy
what is order of Classification?
- species or specific epithet
There are only two divisions of angiosperms ?
- liliopsidsa (monocots)
In terms of the nmber of cotyledons, what are they?
- Moncots =has one seed leave
- and dicots=two seed leaves
what is a calyx?
all the sepals together
what is a corolla?
all the petals together
what is the stamen?
male parts: filaments and anther
what is the pistil?
female parts: stigma, style, and ovary (sos)
what did a seed start out as?
How can you tell if a flower had a compound or simple pistil?
- compound is a group of fused pistils
- simple is a pistil that consists of only one carpel
what is an inflorescence?
a flower cluster
what is an annual?
completes cycle in one year
what is a biennials?
completes life cycle after second year
what is a perrenials?
lives longer than three years and flowers throughout its life cycle
what is mitosis?
growth and repair
what is meiosis?
production of gametes
all angiosperms are heterosporouus what are the two ypes of sexual spores?
- microspores = male
- megaspores = female
germinated pollen grain
embryo sac enclosed
what is a gametophyte generations?
the first cell is normally a spore and the last cell is normally a gamete.
what is a sporophyte generations?
the first cell is normally a zygote and the second is a sporocyte
fertilization results in a?
union of a sperm and an egg (zygote)
how is asexual and sexual reproductions different?
- asexual = involves only mitosis
- sexual = involves meosis
what is rule number 1 of the lifecycle?
the first cell of any gametophyte generation is normally a spore and the second is a gamete
what is rule 2 of the lifecycle?
any cell of a gametophyte genreation is usually haploid (1N)
what is rule 3 of lifecycle?
the 1st cell of any sprophyte generation is normally a zygote and the last is a sporocyte
what is rule 4 of lifecycle?
any cell of a sporophyte is diploid (2N)
what is rule 5 of the l c?
the change from a sporophyte to a gametophyte generation occurs as a result of meiosis
what is rule 6 of l c?
the change from a gametophyte to a sporophyte generation occurs as a result of ferilization
what is pollination?
transfer of pollen grains from the anther to the stigma
what is the vessel or covered seed?
what is special about the polar nuclei?
the two nuclei that migrate toward the center
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