. College botany; structure, physiology and economics of plants. Botany. LEAVES 79 the leaf. They open into very irregular and complicated spaces between .the mesophyll cells and pei-mit free communication with the air on the outside. These inner cells (mesophyll) take up carbon dioxide, which is used in the making of carbohydrates and give off oxygen and water in the form of vapor. The stomata are also found on green stems and on green fruits but undergo a. Fig, 61.—Common forms of trichomes. special development into structures known as lenticels (Figs. 28, 29 and 30) (see page 52). In some p
. College botany; structure, physiology and economics of plants. Botany. LEAVES 79 the leaf. They open into very irregular and complicated spaces between .the mesophyll cells and pei-mit free communication with the air on the outside. These inner cells (mesophyll) take up carbon dioxide, which is used in the making of carbohydrates and give off oxygen and water in the form of vapor. The stomata are also found on green stems and on green fruits but undergo a. Fig, 61.—Common forms of trichomes. special development into structures known as lenticels (Figs. 28, 29 and 30) (see page 52). In some plants certain ones of the stomata are modified into structures known as water pores. These water pores are enlarged stomata, which are formed at the tips of the veins on the margins of the leaves of the fuchsia, cab- bage, nasturtium and many other plants. The water escapes from them in much greater abundance than from the ordinary stomata and frequently collects during the night in very notice- able drops. The passage of water through these pores is known. 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 Cook, Melville Thurston, 1869-1952. Philadelphia and London, J. B. Lippincott Company
Size: 1556px × 1606px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1920
