. The algae. Algae. w- a. ^ b cells f I to KtlJ" bKimoTyied -- ?. 5 days 2c/ays 1 2 Length of exposure to drought Sdays Fig. 205 Effect of exposure to drought on A, Hormidium; B, 'Hor- midiunC stage of Prasiola', C, Zygogonium ericetorum. (After Fritsch and Haines.) in the permeability of the cell wall, whilst the access of moisture normally brings about changes in the reverse direc- tion. The majority of cells which do plasmolyse lack the characteristic granules, mainly of fat, that are to be found in most terrestrial algae. (5) Those cells which survive after drought do not contain any
. The algae. Algae. w- a. ^ b cells f I to KtlJ" bKimoTyied -- ?. 5 days 2c/ays 1 2 Length of exposure to drought Sdays Fig. 205 Effect of exposure to drought on A, Hormidium; B, 'Hor- midiunC stage of Prasiola', C, Zygogonium ericetorum. (After Fritsch and Haines.) in the permeability of the cell wall, whilst the access of moisture normally brings about changes in the reverse direc- tion. The majority of cells which do plasmolyse lack the characteristic granules, mainly of fat, that are to be found in most terrestrial algae. (5) Those cells which survive after drought do not contain any vacuoles and possess instead a rigid, highly viscous proto- plast which is in a gel condition. This is the normal state of the vegetative cells of Pleurococcus and the cells in the ^Hor- midium' stage of Prasiola. 380. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chapman, V. J. (Valentine Jackson), 1910-. London, Macmillan; New York, St. Martin's Press
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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectalgae
