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Cryptogams - Division III- Pteridophytes

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Pteridophyta:

Aspect Details
Structure Plants have well-developed roots, stems, and leaves. They have specialised conducting tissues (xylem and phloem) for transporting water and food. Do not bear flowers or fruits.
Reproduction Asexual reproduction occurs through spore formation on the underside of leaves. Sexual reproduction involves zygote formation after the fusion of gametes.
Classification as Cryptogams Classified as cryptogams because their reproductive organs are hidden and not visible to the naked eye (cryptos = hidden, gams = reproductive organs).
Examples

Ferns: Nephrolepis, Marsilea, Pteris, Adiantum.

Others: Equisetum, Selaginella, Lycopodium.

Habitat Found in moist, shaded environments such as forests, garden edges, and near water bodies.
Ecological Importance It helps in soil formation and preventing erosion with their roots. It serves as an ornamental plant due to their attractive fronds. Provide habitat and shelter for small organisms in ecosystems.
Evolutionary Significance Represent an evolutionary step between non-vascular plants (like bryophytes) and seed-bearing plants (gymnosperms and angiosperms). Their vascular system allows them to grow larger and occupy diverse habitats compared to simpler plants.

Plants of the pteridophyta division

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