Propagation method of algae 1, vegetative propagation
There are many ways of vegetative propagation of algae. Some use special vegetative branches, such as the reproductive branches of Astragalus verticillata, which will grow into new individuals independently after landing, while others rely on false roots to reproduce, such as Phaeophaga.
2. Asexual reproduction
The vegetative propagation of algae mainly depends on swimming spores, which generally have 1-4 flagella, chloroplasts and eye spots, and have the ability to swim freely without cell walls. There are also many spores that cannot swim because of lack of flagella, such as endospores of Cyanophyta and scleroderma of Chlorophyta.
3. Sexual reproduction
Sexual reproduction mainly depends on gametes, which can be homozygous or heterozygous. Homogamy is that gametes with the same shape and size approach each other and fuse to form thick walls and zygotes, while heterogamy is that gametes with different sizes fuse to form zygotes.
4. Morphological characteristics
The growth size of algae varies greatly, the smallest diameter is only 1-2 microns, and the largest is more than 60 meters long. They mainly live in water, but some live on wet rocks, tree trunks, soil surfaces or inside.