| Summary: | On the basis of measurements of the rate of gas exchange in the leaves of mosses the value of the compensation and of the light saturation of photosynthesis points was determined. These points differentiate mosses into photo- and sciophilous ones.Moss species such as: Mnium punctatum, Catherinea undulata, Polytrichum juniperinum, Funaria hygrometrica, Polytrichum piliferum, Aloina rigida were also classified according to differences in the anatomical structure of their leaves. The morphological characters of the anatomical structure of leaves and their chlorophyll content are connected with photosynthetic activity. There is a correlation between the leaf surface and the degree of differentiation of the anatomical structure. This results in an enlargement of the contact surface of the cells assimilating from the air, and this in turn is associated with an increase in the photosynthetic activity per leaf surface area unit.
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