3. Fragmentation-This mode of asexual division is more common in filamentous bacteria. In this mode, filament of the growing cell gets fragmented into small bacillary or coccoid cells, these cellular fragments eventually develop into new cell.   

4. Spore Formation: Spores are produced and give rise to new individual on germination. There are several kinds of spores (Figure 18.3) and these are as follows:

(A) Zoospores: These are motile and flagellated spores produced inside the zoosporangia. These are without cell wall and they utilizes the flagella to swim in water to disperse distant locations. These spores are found in fungi especially phycomycetes.

 

Figure 18.3: Different types of spores.