2. What is Cryptogams ?
A cryptogam(scientific name cryptogamae) is a plant that reproduces by
spores without flowers and seeds.Cryptogames means hidden reproduction
,referring to the fact that no seeds is produce thus cryptogams.The best
known groups of cryptogams are algae ,riccia ,ferns etc.
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3. Characteristics of Cryptogams .
Flowerless and seedless plants.
Lower and more primitive plants.
Hidden reproductive organs.
Reproduction by spores.
Three mains groups are
1.Thallophyte
2.Bryophyte
3.Pteridophyte
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5. Charactries of Thallophyta.
They are unicellular
They produce vegetatively or by means of asexual spores.
A phylum of plants of very diverse habit and structure.
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Lycopodium clavatum
6. Characteristics of Bryophyta
This division in the simple stand most primitive non-vascular land plant having
an embryo.
This is the plant division that contains mosses.
Plants in this Division have crude stems and leaves but no roots.
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Riccia fluitans
7. Characteristics of pteridophyta
The division include first vascular land plants.
All the plants have vascular tissue.
The plants are sporophytes and made up of true roots and streams.
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Pteris wallichiana (Brake)
12. Economic importance of Cryptogamas
01. We use fungi for nutritious food
02 Some fungi are toxic
03.Tallophytes (algae) due to high content of
nitrogen
04.We also take pteris as food
05. Some algae or other moss are use to
medicine.
06.Mosses are good for animal food.
07.Mosses helps the soil and prevent soil erosion
by running water
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