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SEEDLESS NONVASCULAR
PLANTS
Rhizoids: threadlike structures that
anchor nonvascular plants to a surface
•Grow in damp places
•Water absorbed and distributed directly
through the cell membrane
•Reproduce by spores
If a scientist tells you
that a tomatoe is a fruit,
but the Supreme Court
tells you that a tomatoe
is a vegetable . . . Who
do you believe?
SEEDLESS NONVASCULAR
PLANTS
a) Mosses
* rhizoids are multi-cellular
a) Liverworts
* rhizoids usually only one cell
* herb for the liver
c) Hornwarts
* most have only one chloroplast in
each cell
* spore producing structures look like tiny
cattle horns
SEEDLESS NONVASCULAR
PLANTS
1. Mosses are usually the first plants to
grow in a new or disturbed environment
2. Pioneer species: The organisms that
are the first to grow in a new or
disturbed area
3. As pioneer plants grow and die,
decaying material builds up and helps
builds soil in which other organisms
can survive
SEEDLESS VASCULAR PLANTS
1. Reproduce by spores
2. Have vascular tissue to transport water
and nutrients to cells throughout the
plant
3. Grow larger than nonvascular plants
because of ability to transport water
and nutrients farther
SEEDLESS VASCULAR PLANTS
1.
2.
3.
4.
Ferns
Ground Pines (club moss)
Spike Mosses (club moss)
Horsetails
FERNS
1. Largest group of seedless vascular
plants
2. Fronds: fern leaves, they produce
spores
CLUB MOSSES
1. Ground Pines and Spike Mosses:
have needle like leaves; spores
produced in structures at the tip of
the stem that look like pine cones
HORSETAILS
1. Has a unique stem that is jointed
and has a hollow center which is
surrounded by vascular tissue.
2. Spores are produced in cone-like
structures at the tip of the stem
3. Stems of horsetails contain silica
(remember diatoms contained
silica in the cell wall)
SEEDLESS PLANTS
Bogs: poorly drained areas of land
that contain decaying plants
Over time the decaying plants are
compressed and form “peat”, which
is used as a low cost fuel in Ireland
and Russia.
SEEDLESS VASCULAR PLANTS
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Houseplants
Gardening (peat moss)
Ferns used to weave baskets
Rhizomes of some ferns are edible
medicines