I' Plants Without Seeds

1
I. Vascular Plants angiosperms, gymnosperms,
ferns
2
A. Some vascular plants have seeds

• They have a greater chance to reproduce than
  plants without seeds.
• They grow only when conditions are right (not too
  hot or too cold).
• Groups of seed plants include angiosperms and
  gymnosperms.

3
B. Angiosperms-Flower or Fruit-Bearing Plants

• Largest classification group of all plants
• Broken down even further by flower or fruit
• Their fruit is a ripened seed that contains a
  baby seed inside.

4
C. Gymnosperms

• Gymnosperm means naked seeds.
• They have unenclosed seeds (no fruit to cover the
  seeds).
• Include coniferous plants, which have cones to
  help in reproduction.

5
D. Some vascular plants do not have seeds.

• These plants do not reproduce by seeds.
• They reproduce by spores just like non-vascular
  plants, but they still are vascular plants.
• Ferns are both vascular and seedless.

6
E. Ferns

• Largest group of SEEDLESS plants
• Grow in a variety of places and have different
  appearances
• Live in moist habitats
• Form spores to reproduce
• The spores are found on the fronds (leaves of the
  fern)

7
Glenn Seaborg Trail in New York
http//www.science.doe.gov/SC-80/trail/ferns.htm
8
Torch Valley, Saskatchewan, Canada
http//www.sasktourism.com/torchvalley/photo_galle
ry.htm
9
II. Nonvascular Plants Mosses and Liverworts
10
A. Mosses

• Seedless
• Grow in moist environments
• Need water to complete their life cycle
• Do not have roots, leaves, or stems

11
B. Characteristics of Liverworts

• Seedless
• Grow on rock or soil where there is LOTS of water
• Name came from medieval times when people
  believed that since the plant looked like a liver
  that it would cure liver disease. This was later
  proved untrue.

12
Riverside in Big Sky, Montana
http//www.bigskycachers.com/Photos/wet20moss201
.jpg
13
Volcano in Iceland covered in moss
http//www.arrakeen.ch/europe/1252020volcanic20
stone20covered20with20moss.JPG
14
Moss on a branch, location unknown
http//www.wallpaper.net.au/wallpaper/plants/Moss
20On20Branch20-201024x768.jpg
15
Tiger Wilderness, Australia
http//www.tigerwilderness.com.au/cradleimages/Pla
nt20Moss.JPG
16
Liverworts of Unknown Location
http//www.mybitoftheplanet.com/2002/frogjune_file
s/liverwort1406big.jpg
17
Magnified picture of Liverworts
http//www.bioimages.org.uk/MMWSt/MinDSDII/1975/75
-02/75-02-01/75B01Sphaerocarpos2.jpg