Guard-cells sentence example

  • The guard-cells contain chlorophyll, which is absent from typical epidermal cells, the latter acting as a tissue for water storage.
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  • Above each cavity is situated a so-called water-sloma, no doubt derived phylogenetically from an ordinary stoma, and enclosed by guard-cells which have nearly or entirely lost the power of movement.
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  • The cells of the epidermis are very closely united laterally and contain no green colouring matter (chlorophyll) except in the pair of cells - guard-cells - which bound the stomata.
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