On the basis of what data can it be argued that the plant world developed and became more complicated gradually?

If we trace how the structure of plants from algae to flowering is complicated, what are the methods of reproduction, which tissues and organs appear, where they live. It can be said that with the development of life on Earth, the plant world developed and became more complicated gradually. Algae have no tissues and organs. In higher spores, a prototype of tissues and organs appears. In gymnosperms and flowering, these tissues are complicated. Propagation methods are complicated from simple cell division in algae to double fertilization in flowering. Algae live in water, mosses in a humid environment, angiosperms live in water and on land (there is also enough precipitation).

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