1, vegetative propagation, algae plants have a variety of vegetative propagation methods, and some use special vegetative branches, such as the reproductive branches of black algae, to grow into new individuals independently after landing; Some reproduce by roots, such as seaweeds, and some spend summer or winter by discoid larvae.
2. Asexual reproduction, mainly relying on spores, can swim freely, such as cyanobacteria endospore, red algae tetraspores, green algae sclerenchyma spores, etc. Sexual reproduction: depending on the gamete, it can be matched or mismatched. Gametes with the same shape and size approach each other and fuse to form thick-walled zygotes. Heterogamy is the fusion of gametes with different sizes or even shapes.
3. Split reproduction is one of the ways of asexual reproduction, and single-celled organisms form two daughters; Such as bacteria (transverse fissure) and euglena (longitudinal fissure), are identical to the mother through cell division (transverse fissure or longitudinal fissure). The division and reproduction of group organisms means that each cell in the group divides at the same time and further develops into a new group which is the same as its mother cell, such as Porphyra and Haematococcus.
4. Spore reproduction is a way for many spore plants and fungi to reproduce by using spores; Spores are reproductive or dormant germ cells produced by bacteria, protozoa, fungi and plants. Can directly develop into a new individual. Spores produced by asexual reproduction of plants are called asexual spores, and spores produced by sexual reproduction are called sexual spores.