Transcript Nonvascular Plants and Seedless Vascular Plants

Nonvascular Plants and
Seedless Vascular Plants
BSC 2011L
Plants
 Domain

Eukarya
Kingdom Plantae
 “Bryophytes” - nonvascular
 Phylum Hepatophyta
 Phylum Anthocerotophyta
 Phylum Bryophyta
 “Vascular Seedless Plants”
 Phylum Lycopodophyta
 Phylum Monilophyta
 Phylum Monilophyta
 Phylum Monilophyta
seedless plants
Liverworts
Hornworts
Moss
Club Moss
Wisk fern
Horsetails
Ferns
Evolutionary relationships of plants
 Review
Fig 16.1
Alternation of Generations
 Sporophyte

Generation
Produces haploid spores by meiosis
 Gametophyte

Generation
Produces gametes by mitosis
Nonvascular Seedless Plants
 Mosses,
liverworts, and
hornworts
 Gametophyte generation is
dominant


Produces eggs in
archegonia
Produces flagellated sperm
in antheridia
 Rely
on water source for
reproduction
Notice the gemmae cups
In this liverwort
Nonvascular Seedless Plants
Moss Life Cycle
Vascular Seedless Plants
 Whisk
ferns, club mosses,
horsetails, and ferns
 Sporophyte generation is
dominant
 Adaptations for living on
land


Vascular tissue
Windblown spores
Vascular Seedless Plants
Fern Life Cycle
What is a Thallus?
 Body
of a lower plant that has no recognizable
shoot, root, or leaf regions
 Fern
prothallus - gametophyte
Young sporophyte emerging from prothallus
Vascular Seedless Plants
Cross Section of Frond Leaflet
 Sporophyte
Generation
 Look at Figure 16.15
 The sorus contains the sporangium where the
spores are produced