Bryophytes

1
Bryophytes

• Mosses and their relatives
• Chapter 22.2

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Bryophytes

• Nonvascular plants
• Rely on water for reproduction
• No vascular tissue ?
• Uses osmosis to transport
• Limits height to 2-3 cm

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Bryophyta Mosses

• Live in areas with water
• Examples
• Wet habitat and nutrient-poor soil
• Can tolerate low termperatures
• No true roots, stems or leaves
• (no vascular tissue)

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Bryophyta Mosses

• Individual plant drawing

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Hepaticophyta Liverworts

• -wort plant
• Liver-shaped flat leaves
• Draw moisture from the surface
• Can reproduce asexually

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Hepaticophyta Liverworts
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Anthocerophyta Hornworts

• Looks like a tiny green horn

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Reproductive Structures

• Antheridia
• Produce sperm
• Sperm must swim to an egg
• Archegonia
• Produce eggs
• Egg waits for sperm
• May be found on separate or same plant

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Reproduction

• How does it happen?
• Excellent question!
• Drawing

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Alternation of Generation

• Spores are the start of a new plant
• See drawing on board

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Uses of Bryophytes

• Peat moss
• Soil additive (for pH and H2O)
• Fuel
• Dry and then burn it