Kingdom Viridiplantae
Chlorophytes, Charophytes, and Bryophytes
Chapter 6
For most of the specimens viewed in today's lab use your 40X lens (only after
you use 4X and 10X to get the specimen into focus, or you may break the slide).
Make drawings of what you see in your notebook.
Phylum Hepaticophyta
- pages 78-81.
-Learn the life cycle of the thalloid liverwort Marchantia
on page 79 (fig. 6.5).
-Study the model of Marchantia
.
-find the thallus, gemmae cupules
(cup), archegoniophore, and antheridiophore.
-review figs. 6.8-6.10, learn
all labels
- study plastic models of archegonial
receptacle and archegonium and compare to fig 6.12. Learn labels.
-Study preserved material of Marchantia
-preserved specimen one shows the
thallus with gemmae cupules. (fig. 6.8 and 6.9)
-preserved specimen two shows the
male thallus with antheridiophore. (fig. 6.6)
-preserved specimen three shows the
female thallus with archegoniophore. (fig 6.7)
Phylum Anthocerotophyta - page 82.
-Study preserved material of Anthoceros
(fig.6.17 b).
-find the gametophyte and sporophyte.
Phylum Bryophyta -
page 83-86.
-Learn life cycle of a typical moss on page 84 (fig. 6.28)
-Study preserved material of moss gametophytes. (fig.
6.28)
-find stem-like structure and
leaf-like structure.
-what is the nuclear condition of the
gametophyte?
-Mnium: male moss gametophyte (slide l..s.) - use 40X
lens. (figs. 6.35 and 6.36).
-find antheridia, sperm (labelled
spermatogenous tissue), and paraphyses.
-Mnium: a female moss gametophyte (slide ll.s.)
- use 40X lens. (fig. 6.34).
-find archegonia (stalk, venter, neck
, neck canal), egg, and paraphyses.
-Study the preserved material of moss sporophytes. (fig.
6.31-2 and 6.38).
-find seta (stalk), sporangium
capsule, and operculum.
-Polytrichum or Sphagnum: a moss sporophyte
(slide l.s.) - use 40X lens. (figs. 6.38).
-find seta, spores, operculum
Other demonstrations may be out for you to view. Include them in
your notebook.
YOU ARE RESPONSIBLE THE TAXONOMY GIVEN ON YOUR HANDOUTS.