Lesson 11: sporophytes Flashcards
alternation of generations:
- starts with a haploid gametophyte
- this makes sperm and egg cell using mitosis
- through syngamy, it will form a zygote (diploid)
- this will then form a sporophyte (diploid plant)
- sporangia (diploid) then also make spores through mitosis (haploid)
liverworts
phylum hepaticophyta
female sex organs
archegonia
male sex organs
antheridia
bryophytes
mosses
what has rhizoids?
bryophytes
plant body of bryophytes
thallus
plants that have both male and female parts
dioecious
zygote
fertilized egg
where zygote divides and matures
in the archegonium to produce the sporophyte
occur on the dorsal surface of thalli
gemmae cups
lens-shaped outgrowths inside the gemmae cups
gemmae
specialized stalks on female plants that bear archegonia
archegoniophores
parts of archegonium
a neck and a venter, which contains the egg.
specialized stalks on male plants that bear antheridia
antheridiophores
how are spores produced
by meiosis in a capsule located on a seta (stalk)
sporophyte is
nonphotosynthetic
mosses
phylum bryophyta
sporophyte is attached to the gametophyte by a structure called a
foot
on the tip of a capsule is a catlike structure called the
operculum
hornworts
phylum anthocerophyta
leaflike structures that bear spores
sporophylls
leaf with several veins
megaphylls
smaller leaves with less veins
microphylls
where are spores produced
in sporangia
ferns
phylum pterophyta
produce one kind of spore that makes a single type of gametophyte
homosporous
produce two types of spores
heterosporous
two types of spores
megaspores and microspores
club mosses
phylum lycophyta
fiddlehead
fronds of the sporophyte breaking the ground
bryophytes
include Liverworts, Hornworts and Mosses and are the most primitive of terrestrial plants. ARE NON VASCULAR
