The plant epidermis consists of three main cell types : pavement cells, guard cells and their subsidiary cells that surround the stomata and trichomes, otherwise known as leaf hairs.
32.
Differences from Smilacaceae include that " Ripogonum " lacks stipules, it has a wet rather than dry stigma, its seeds and leaves contain starch, and its guard cells contain oil.
33.
He conducted extensive research on the mechanics of sap ascent, the construction of a leaf's pulvinus, the positioning of a plants'leaves, and the inner-workings between stomata and its guard cells.
34.
Note that the desired range cell space-time snapshot is typically excluded ( as well as a number of additional cells, or " guard cells " ) to prevent whitening of the statistics.
35.
Among other things, this technique is used to isolate specific cell types ( e . g ., guard cells from leaves, pericycle cells from roots ) for further investigations, such as transcriptomics.
36.
Further work with Barry Palevitz showed that microtubules were involved in orienting the cellulose microfibrils in the walls of guard cells in a pattern of radial micellation that is necessary for stomatal function.
37.
The stomatal pores perforate the epidermis and are surrounded on each side by chloroplast-containing guard cells, and two to four subsidiary cells that lack chloroplasts, forming a specialized cell group known as the stomatal complex.
38.
There were two small guard cells surrounded by two large similarly shaped subsidiary cells ( paracytic ) deriving from a pronounced elliptical cuticular ledge on the surface of the guard cells surrounding a thickened circumporal area.
39.
There were two small guard cells surrounded by two large similarly shaped subsidiary cells ( paracytic ) deriving from a pronounced elliptical cuticular ledge on the surface of the guard cells surrounding a thickened circumporal area.
40.
The best preserved is circular, around 35 �m in diameter, with two guard cells . " Hollandophyton " was ( at least in 2002 ) the oldest fossil on which both stomata and sporangia have been found.
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