T-cell costimulatory

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#Id: 10580

#XL - R Botany

Thallophyta

Largest group of plant kingdom.

not differentiated into stem, leaves and roots and no distinctive tissue systems.

mostly aquatic plants and found both in fresh and marine water due to absent of "true roots" and vascular tissue.

cell wall composed of cellulose around their cells.

Ex- Algae, Fungi and Lichens

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#Id: 10581

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Algae

Chlorophyll bearing thallophytes

Autotrophic mode of Nutrition

Ex- Chlorella, Chlamydomonas, Cladospora, Sargassum, Gelidium, Laminaria

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#Id: 10582

#XL - R Botany

Algae

Largest producer of Carbohydrates 

some forms edible like Ulva (sea lettuce)

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#Id: 10583

#XL - R Botany

Algae

They exist as-

Microscopic Unicellular- Chlamydomonas

Colonial Forms- Volvox 

filamentous forms- Ulothrix and Spirogyra

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#Id: 10584

#XL - R Botany

Reproduction

Vegetative reproduction-   by fragmentation

TLS Online TPP Program

#Id: 10585

#XL - R Botany

Reproduction

Asexual reproduction-  by spore formation (zoospores)