Unformatted text preview: The conjugation tubes meet and join up. The chloroplast starts to break down. The cell contents become a gamete. The cell contents of one filament pass through the conjugation tube and the nuclei fuse. Although there is no visible difference between the filaments, one is clearly acting as the producer of ‘male’ gametes. The zygote forms a wall round itself and becomes a spore which can resist adverse conditions, e.g. cold and lack of light. When conditions improve, the spore germinates to produce a new filament © D.G. Mackean spore cell wall breaks down...
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- Fall '11
- Chloroplast, Cell nucleus, Cytosol, D.G. Mackean, conjugation tube