and Fern Life Cycles Group 1 Seedless Nonvascular Plants Live in moist environments to reproduce Grow low to ground to retain moisture nonvascular Lack true leaves Common pioneer species during succession ID: 540284
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Slide1
Moss
and
Fern Life CyclesSlide2
Group 1: Seedless, Nonvascular PlantsLive in moist environments to reproduce
Grow low to ground to retain moisture (nonvascular)
Lack true leaves
Common pioneer species during successionGametophyte most common (dominant)Ex: Mosses, liverworts, hornwortsSlide3
Moss Life CycleSlide4
Haploid gametophytes
1)Moss gametophytes grow near the ground (haploid stage)
2) Through water, sperm from the male gametophyte will swim to the female gametophyte to create a diploid zygote
3) Diploid sporophyte will grow from zygote
4) Sporophyte will create and release haploid spores
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Diploid sporophyte
egg
egg
egg
egg
male
male
male
male
female
female
female
female
zygote
zygote
zygote
zygoteSlide5
5) Haploid spores land and grow into new gametophytes
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ground
Haploid gametophytes
6) The process repeatsSlide6
Haploid gametophytes
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sporophyte
egg
egg
egg
egg
male
male
male
male
female
female
female
female
zygote
zygote
zygote
zygoteSlide7
Group 2: Seedless, Vascular PlantsVascular system allows
Taller growth
Nutrient transportation
Live in moist environmentsswimming sperm
Gametophyte stageMale gametophyte: makes spermFemale gametophyte: makes eggsSperm swims to fertilize eggsSporophyte stageSpores released into air
Spores land and grow into gametophyteEx: Ferns, Club mosses, HorsetailsSlide8
Fern Life CycleSlide9
Adult
Sporophyte
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1) Sporophyte creates and releases haploid spores
groundSlide10
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ground
2) Haploid spores land in the soilSlide11
ground
3) From the haploid spores, gametophyte grows in the soil
Let
’
s zoom in
Fern gametophytes are called a prothallusSlide12
4) Sperm swim through water from the male parts (antheridium) to the female parts (archegonia)…zygote created
Let
’
s zoom back out
egg
egg
egg
zygote
zygote
zygoteSlide13
ground
5) Diploid sporophyte grows from the zygote
sporophyte
Fern gametophytes are called a prothallusSlide14
6) Fiddle head uncurls….fronds open up
ground
7) Cycle repeats
-- Haploid spores created and released
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fiddlehead
frondSlide15
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.
.
ground
2) Haploid spores land in the soilSlide16
ground
3) From the haploid spores, gametophyte (called the prothallus) grows in the soil
Let
’
s zoom inSlide17
4) Sperm swim through water from the male antheridium to the female archegonia
Let
’
s zoom back out
egg
egg
egg
zygote
zygote
zygoteSlide18
ground
5) Diploid sporophyte grows from the zygote
sporophyte
fiddleheadSlide19
6) Fiddlehead uncurls….fronds open up.
ground
7) Cycle repeats
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.Slide20
Kobe KuizWhy do moss grow so low to the ground?
Which stage is the main stage of moss: sporophyte or gametophyte?
How do moss reproduce?
What is the major difference between moss and ferns?What are the leaves of ferns called?
What is needed for moss and ferns to reproduce?Which stage is the main stage of ferns: sporophyte or gametophyte?What stage is created when sperm and egg fuse: sporophyte or gametophyte?Name the gametophytes of ferns.