Do Now classify the following as vascular or nonvascular A B E C D Moss life cycle Antheridium Archegonium Antheridium Archegonium Antheridium Archegonium 1 2 ID: 785702
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Slide1
I can
: compare and contrast the moss and fern life cycle
Do Now:
classify the following as vascular or nonvascular:
A B E
C D
Slide2Slide3Slide4Moss life cycle
Antheridium Archegonium
Antheridium
Archegonium
Antheridium
Archegonium
1
2
3
4
5
Protonema
Grows
root-like structure
Slide5Moss Life Cycle Videohttps://www.youtube.com/watch?v=xbSZbd02UEg
Slide6Alternation of Generations in Mosses
Sporophyte
Gametophyte
Antheridium (male)
Archegonium
(female)
Slide7Moss Gametophyte
Moss
Archegonium
makes egg cell
Slide8Moss Sporophyte
Moss Capsule contains spores
Slide9Moss spores
Slide10Moss
Protonema
Slide11Summary: Moss life cycle
Dominant Gametophyte (seen most often)
Antheridum
–male structure
Archegonium
–female structure
Nonvascular (no true roots
or stems)
Capsules contain spores
Spores carried by wind
Protomema
– root-like structure that grows from a spore
Slide12Fernlife cycle
ZygotegrowsFiddleheadsuncurl
Fronds have
Sori
that make spores
sporangium releases spores
Spores carried by wind and grow in soil
Gametophyte
Prothallus
Sporophyte
Sperm from
antheridium
swim towards egg cell in the
archegonium
New Zygote
forms
Slide13Fern life cycle videohttps://www.youtube.com/watch?v=c4YtOT0Z6Ek
Slide14Alternation of Generations: Ferns
young
diploid sporophyte
beginning to grow from the
haploid gametophyte
Slide15Fern Gametophytes
Slide16Young Fern Sporophyte
F
iddlehead
young sporophyte produces curled
“
fiddleheads
”
that uncurl into mature fronds
Slide17Fern Sporophyte
Slide18Fern Sporophyte
Frond
= diploid sporophyte (leaf)
Sorus
= collection of sporangia where meiosis occurs to make spores
Slide19Many
Sori
on a Fern sporophyte
Slide20A
Sorus
Close Up
Sporangium
Slide21Fern Sporangium
Spores
Slide22Summary: Fern life cycle
Dominant Sporophyte (seen most often)
V
ascular (have roots and stems)
Fronds
(leaves) have
sori
(plural)/
sorus
(singular)—contain
spores
Spores carried by wind
Heart-shaped gametophyte (
Prothallus
)
Fiddleheads—curled stem with leaves
Slide23Mosses
Ferns
both