Bryophytes

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Transcript Bryophytes

Bryophytes
Making the transition
from water to land
Adapting to life on land…
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Some structures to prevent water loss
Thin bodies absorb water
Short bodies (transport water cell to cell)
Leaf and root like structures
Algae and Plants share…
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Chloroplast & get energy from the sun
Cell-wall material (cellulose)
Energy storage molecule (starch)
Eukaryotic & multi-cellular
Besides those traits, all plants…
• Have alternation of generations
– Haploid fuse sex cells to become diploid
– Diploid undergo meiosis to become haploid
• Haploid and diploid generations have very
different shapes
Bryophyte: Pseudo Roots
(Liverwort)
Bryophyte: Pseudo Roots
Bryophyte: Pseudo Roots
Bryophyte: Pseudo Leaves
Bryophyte: Pseudo Leaves
Bryophyte: Stomata (pores)
Bryophyte: Cuticles
Bryophyte Anatomy
Gametophyte
(main plant body,
“leaves”),
haploid
Rhizoids, haploid
Bryophyte Anatomy
Gametophyte
makes gametes
(sperm and eggs),
haploid
Sperm have tails to
swim in the moisture
on the plant to another
nearby plant in order to
fertilize the egg.
Bryophyte Anatomy
Sperm
Sperm being released
Eggs for sperm to fertilize
Bryophyte Anatomy
Fertilized eggs
(diploid) grow into
a sporophyte
The sporophyte (diploid)
grows up from the top of
the gametophyte (haploid)
Bryophyte Anatomy
The
sporophyte
(diploid) is
made up of
a stalk and
capsule…
The sporophyte (diploid)
goes through meiosis and
released spores (haploid)
from the capsule.
Bryophyte Anatomy
The spore (haploid)
grows into a gametophyte
(haploid)
Bryophyte Anatomy
Capsule
Sporophyte
(Diploid)
Gametophyte
(Haploid)
Stalk (Seta)
Gametophyte
(body with
“leaves”)
Rhizoid
Bryophyte Life Cycle
Bryophyte: Moss Species
Bryophyte: Moss Species
Bryophyte: Moss Species
Bryophyte: Moss Species
Bryophyte: Liverwort Species
Bryophyte: Liverwort Species
Bryophyte: Liverwort Species
Bryophyte: Hornwort Species
Bryophyte: Hornwort Species
Bryophyte: Hornwort Species
Bryophyte: Native Species
(Dead! No winter rains!)
Bryophyte: Native Species
(Dead and not quite dead!)
Bryophyte: Native Species
(Still alive!)
Bryophyte: Native Species
(After pouring water on it…)
Blurry footage of moss reviving: Part 1
Blurry footage of moss reviving: Part 2
I’m so happy it’s alive!
Mushroom growing
with liverworts and
mosses. Super cute!