Nonvascular Plants - PowerPoint PPT Presentation

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Nonvascular Plants

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Gemmae cups of Marchantia allow asexual reproduction. Cross section of a gemmae cup. ... The calyptra has been removed and the operculum is visible. ... – PowerPoint PPT presentation

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Title: Nonvascular Plants


1
Non-vascular Plants
  • Non vascular plants are called Bryophytes
  • Bryophytes include
  • Division Bryophyta (mosses)
  • Division Hepatophyta (liverworts)
  • Division Anthocerophyta (hornworts)

2
A leafy liverwort Marchantia
3
Gemmae cups of Marchantia allow asexual
reproduction
4
Cross section of a gemmae cup. Fragments are
visible at cup bottom
5
An antheridiophore containing antheridia (sperm
producers)
6
This shows an archegoniophore of Marchantia Under
the umbrella are individual archegonia which
produce eggs. Eggs will be fertilized by sperm
from antheridia
7
Close-up of archegonium. You can see an egg at
the top of this structure, and the neck canal
8
Air pore in thallus of Marchantia
9
Woodland moss, a Bryophyte
10
Gametophyte with sporophyte growing off the top.
The sporophyte produces a sporangium, which
makes spores. The spores germinate into
protonemata which grow into mature gametophytes
11
Moss sporangium. The calyptra has been removed
and the operculum is visible. Haploid spores are
maturing inside this structure and will produce
new protonemata
12
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