Bryophytes

Bryophytes

BRYOPHYTES The Mosses, Liverworts and Hornworts A TRIBUTE TO MOSS http://www.youtube.com/watch?v=MWRazeU hg44&feature=player_embedded

LOCATION Water vs Land Algae mainly aquatic Moss damp, shady locations What challenges do plants have to overcome to live on land?

GENERAL CHARACTERISTICS Non-vascular Transport water by osmosis Found One

plants (no pipes) in moist shady areas cell thick leaves; lack cuticle = more evaporation

GENERAL CHARACTERISTICS Rhizoids anchor to ground Rhizome underground stem Lack true roots, do not play a major role in absorption

Flagellated sperm BRYOPHYTES 3 Main types

Mosses Liverworts Hornworts MOSSES LIVERWORTS HORNWORTS

MOSSES Class Musci: true moss Gametophyte dominant

Male and female usually separate STRUCTURE REPRODUCTION

Similar to algae Asexual: Fragmentation

Sexual: Water transports sperm to egg in moist environment ASSIGNMENT 1.

2. 3. 4. 5. 6.

What are the three groups of bryophytes? Algae live mainly in the water and mosses live on land. What features do mosses have that have allowed them to do this? What features do more complex land dwelling plants have that mosses lack? Are the gametes of bryophytes haploid or diploid? Are the spores of bryophytes haploid

or diploid? Describe the life cycle of a moss. You can draw a labelled diagram if you want. Is the dominant part of the mosses life cycle spent as a sporophyte or gametophyte?

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