In which pair of organisms does asexual reproduction occur by fragmentation?

1. In fragmentation the parent body breaks into pieces that each grow into a new organism. 2. The alga Spirogyra breaks into fragments that grow into new filaments. 3. The sponge Sycon also forms new individuals from broken fragments. 4. Yeast buds, Amoeba splits, Mucor uses spores and Bryophyllum uses leaf buds, so those pairs are ruled out. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.33_