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1. Vegetative reproduction is by fragmentation. 2. Each fragment develops into a thallus. 3. Asexual reproduction is by the production of different types of spores, the most common - oospores. 4. The spores are non flagellated and on germination give rise to new plants.

( a ) 1,2 and 3 are correct; 4 is incorrect
( b ) 1,3 and 4 are correct; 2 is incorrect
( c ) 1 and 2 are correct; 3 and 4 are incorrect
( d ) 1 and 2 are incorrect; 3 and 4 are correct
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(C) is the right answer.

The algae reproduce by vegetative, asexual and sexual methods. Vegetative reproduction is by fragmentation. Each fragment develops into a thallus. Asexual reproduction is by the production of different types of spores, the most common being the zoospores. They are flagellated (motile) and on germination gives rise to new plants.
answered Jan 6, 2014 by pady_1
 

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