Systemic evolution and kinship between algae
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Last Update: 2021-03-09
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Source: Internet
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Author: User
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The systematic evolution and kinship relationship between the various algae
Algae is a class of low-class plants with photolytic ability, self-cultivation, the type of photocodesm pigment, the type of nutrient storage, the type of swimming cell whiplash and the location of life are the basic basis of the division, from these characteristics can be inferred between the various algae kinship. However, no consensus has yet been reached.
cyanobacteria, the earliest of its kind in the geological age, may be the most primitive type of algae, closest to bacteria, so some people call it Schizophyta. The photosynthels of naked and green algae are similar, but the types of nutrients stored and whiplash are different. Naked algae plants have whiplash, movement, both dynamic, plant characteristics, especially whiplash is the characteristics of most plant male reproductive cells, therefore, whiplash algae may be both algae ancestors, but also other plant ancestor types. The photochesic pigments and stored starches of the green algae gate are the same as those of other higher plants and are undoubtedly the ancestors of green plants. Algae, golden algae, algal gate, diatom door, brown algae door algae are mostly yellow-brown, all contain more flaky and carotene pigment, swimming cells have 2 side whiplash, so infer that their distant ancestors may have close kinship, brown algal gate plant structure gradually complex,
the
of tissues and organs is becoming more and more obvious, and there is obvious generational rotation in life history, so brown algae are higher-level groups. Both red algae and cyanobacteria contain algal bile (the general term for algal cyanobacteria and algal erythrin) and do not have swimming cells, so they may have distant ancestors whose kinship is relatively similar, but the algae structure of red algae, sexual reproduction processes, etc. are far more complex than cyanobacteria, and their systemic evolution is not clear.
It is generally believed that the origin of algae is yrologic, therefore, naked algae gate, golden algae gate, yellow algae gate, diatom door, green algae door, brown algae door seems to originate from the original whiplash, cyanobacteria door appeared before the original whiplash. Red algae doors may have a common ancestor with cyanobacteria doors, unlike other doors.
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