1. Bryophytes
Mini-Lab #1

2. Mini Lab Activity #1 Need TWO more Circle on the BACK-use petri dishes
Three Slides Capsule (sporangia) CS Gametangia (antheridia, archegonia) CS
Protonemia CS
One Sample - Moss sample (draw on back) DS
Need TWO more Circle on the BACK-use petri dishes
Draw The Entire field of vision
Use digital camera, cell phone, etc for future
Be sure to write a title above each circle indicating what the sample is. Look at the slide label
Magnification must be written below your drawing
Include the following labels in your drawings:
Sample (sporophyte & gametophyte, seta, capsule, calyptera, annulus, operculum, peristome.
Protonema: spore & filamentous cells
Gametangia: antheridia (sperm) or archegonia (egg)
Capsule: annulus, peristome, spores (use the chart posted) 2

3. Life Cycle of Bryophyta (pg. 581)3

4. Bryophytes “Non-Vascular plants”
Evolved over mya
Over 15,000 species
Includes: Liverworts (Hepatophyta)
Hornworts (Anthocerophyta)
Mosses (Bryophyta)
Peat Moss (Sphagnum)
Grow very small: No lignin (short stature)
Exists close to the water’s edge
No vascular tissue
Gametophyte generation is dominant (haploid)
Sperm is flagellated (must swim to the female)
Reproductive structures form in these gametangia:
Male: antheridium Female: archegonium 4

5. Key Structures to know for the Moss (pgs. 580-581)
Protonema: filament of highly branched cells
developed from a germinated spore
large surface area for absorbing water
Rhizoids: long, tubular cells that anchor the plant
not considered roots (lack vascular,conductive cells)
Most of it doesn’t absorb water or nutrients
Sporophyte: Foot, seta (stalk), annulus, and capsule
Calyptera: protective cap over the operculum & annulus
Peristome: tooth-like structure that gradually releases the spores from the capsule. (50 million per capsule)
Specific Genus Examples: (see pg. 582)
Sphagnum (peat mosses)
Marchantia (liverworts)
Anthoceros (hornwort) 5

6. Antheridia & Archegonia (Gametangia)

7. Protonema Filaments (germinated spores)

8. Capsule & Spores

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