this is a ppt about diversity in living organisms,my topic was kingdom Plantae-Pteridophyta. Me and my partner Preksha did it together....hope it helps

1. Kingdom Plantae-Pteridophyta
Diversity in living organisms
By : Preksha and Ramla

2. Criteria for kingdom plantae
•Cell type : Eukaryotes.
•Cell number:multicellular
•Cell structure :cell wall made of
cellulose
•Mode of nutrition: autotrophic
•Some are parasitic or saprobes

3. Pteridophyta
a division of flowerless
green plants that
comprises the ferns
and their relatives.
Examples include
ferns, horsetails and
club-mosses.
Many ferns from tropical
rain forests are epiphytes,
which means they only
grow on other plant
species.
Fronds is the largest
species of ferns it can
reach some six metres
in length!

4. WHAT IS
CRYPTOGAMAE?
A cryptogam (scientific
name Cryptogamae) is a plant
that reproduces by spores,
without flowers or seeds.

5. TYPES OF PTERIDOPHYTES
Pteridophytes have mainly been divided into 3
Classes.
• Lycopodophyta (club mosses)
• Sphenophyta (horse tails)
• Filicinophyta (ferns)

6. CLUB MOSSES
• The plants are mainly native to tropical mountains but
also common in northern forests of both hemispheres.
• Club mosses are evergreen herbs with needlelike or
scale like leaves and, often, cone like clusters of small
leaves (strobili), each with a kidney-shaped spore capsule
at its base.
• They do not have seeds.

7. HORSE TAIL
• The plants grow in wetlands and marshy, wet areas
at the edge of swamps, ponds and lakes.
• Horsetails are vascular plants that reproduce by
spores, not seeds, and by spreading underground
stems called Rhizomes.
• The common field horsetail is a perennial that
grows up to 2 feet tall.

8. FERN
• Ferns are vascular plants.
• They have roots and leaves (called fronds) and in
some cases they have true stems.
• Ferns can be deciduous or evergreen.
• In tropical regions, tree ferns may reach a height of
80 feet.

9. Examples of Pteridophytes
marsilea fern
horsetails
Psilotum