Question

Photographs 5 plants of each of the thallophyta, Bryophyta, pteridophyta division and write their description of each

Answer 1

Thallophyta- These plants mainly grow in water. This group of plants which do not have specific parts like root- stem- leaves- flowers but are autotrophic due to presence of chlorophyll. They may be unicellular or multicellular plants

Pteridophyta- Plants from this group have well developed roots, stem and leaves and separate tissues for conduction food and water.But they do not wear flowers and fruits. They reproduce with the help of spores formed along the back or posterior surface of their leaves.

Bryophyta- This group of plants is called the amphibians of the plant kingdom because they grow in moist soil but need for water reproduction. These plants are thalloid, multicellular and autotrophic. They reproduce by spore formation. The structure of the plant body of bryophytaes is flat, ribbion like long, without true root, stem and leaves. Instead they have stem- like or leaf- like parts and root like rhizoids. They don't have specific tissues for conduction of food and water.

Division- Thallophyta-- Spirogyra.
Division- Brophyta-- Rhizoids.
Division- Pteridophyta-- Selaginella, Lycopodium and Fern.

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