Title: 
Headings: Kingdom Plantae, Part I - Bryophytes and Ferns
Kingdom
 
Plantae,
 
Part
 
I
 
-
 
Bryophytes
 
and
 
Ferns
 

I.
  
Introduction
  

II.
 
Objectives:
 

III.
  
Part
 
I
 
-
 
Bryophytes
 

Examination
 
of
 
living/preserved
 
Polytrichum:
 

Examination
 
of
 
prepared
 
moss
 
slides:
 

IV.
  
Part
 
II
 
-
 
Ferns
 

Examination
 
of
 
fern
 
sporophyte
 
and
 
section
 
of
 
sorus:
 

Observation
 
of
 
a
 
fern
 
gametophyte:
 

Fern
 
gametophyte
 
with
 
attached
 
sporophyte:
 

V.
 
 
Review
 
Questions
 

Other:
 


Content: Using
 
the
 
cladogram
 
in
 
Figure
 
1
 
as
 
a
 
guide,
 
which
 
structures
 
do
 
bryophytes
 
lack
 
that
 
all
 
other
 
plants
 
(ferns
 
and
 
seed
 
plants)
 
possess? List
 
at
 
least
 
three. The
 
photosynthetic
 
portion
 
of
 
a
 
bryophyte
 
is
 
called
 
a
 
thallus. Remember,
 
bryophytes
 
lack
 
vascular
 
tissue,
 
so
 
they
 
do
 
not
 
possess
 
true
 
leaves,
 
roots,
 
or
 
stems
 
like
 
vascular
 
plants. The
 
life
 
cycle
 
of
 
bryophytes
 
is
 
characterized
 
by
 
distinct
 
alternation
 
of
 
generations
 
in
 
which
 
the
 
gametophyte
 
is
 
the
 
dominant
 
stage
 
of
 
the
 
life
 
cycle. The
 
gametophyte
 
stage
 
is
 
dominant
 
because
 
it
 
is
 
larger
 
and
 
longer
 
lasting
 
than
 
the
 
sporophyte
 
stage,
 
and
 
the
 
sporophyte
 
is
 
nutritionally
 
dependent
 
on
 
the
 
gametophyte. The
 
gametophytes
 
are
 
either
 
male
 
or
 
female. Male
 
gametophytes
 
develop
 
male
 
sex
 
organs
 
called
 
antheridia,
 
which
 
produce
 
flagellated,
 
swimming
 
sperm. Female
 
gametophytes
 
develop
 
female
 
sex
 
organs
 
called
 
archegonia,
 
which
 
produce
 
eggs. Bryophytes
 
require
 
water
 
for
 
sexual
 
reproduction
 
because
 
the
 
antheridia
 
and
 
archegonia
 
are
 
on
 
separate
 
individual
 
gametophytes,
 
so
 
sperm
 
must
 
swim
 
to
 
the
 
archegonia
 
in
 
drops
 
of
 
water.