. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. the eye? (100.) Do the Fig. 106. — Potato tuber showing lenti- oels, A, A, or pores for air on the surface; S, leaf scale, or scar. scales occur in any regular order — that is, opposite, or alternating with, each other, like the leaves on a stem ? Look on the surface for a number of small, lens-shaped dots (A, A, Fig. 106) scattered irregularly over it. These are aerating pores called lenticels, and are found in most dicotyl stems. Does their presence help to throw light o
. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. the eye? (100.) Do the Fig. 106. — Potato tuber showing lenti- oels, A, A, or pores for air on the surface; S, leaf scale, or scar. scales occur in any regular order — that is, opposite, or alternating with, each other, like the leaves on a stem ? Look on the surface for a number of small, lens-shaped dots (A, A, Fig. 106) scattered irregularly over it. These are aerating pores called lenticels, and are found in most dicotyl stems. Does their presence help to throw light on the real nature of the tuber? If any sprouts occur on your specimen, where do they originate? Where do buds and sprouts originate on plants above ground ? Make a sketch of the outside of a potato, showing the lenticels, eyes, and scales, or the scars left by the scales in case they have fallen away, as has probably happened, if your specimen is an old one. Cut a small slice from the stem end of two potatoes, stand. Figs. 107, 108. — Transverse and longi- tudinal sections of the potato: A, skin ; B, cortical layer ; C, outer pith layer ; D, inner pith layer. 108. 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 Andrews, Eliza Frances, b. 1840; Lloyd, Francis Ernest, 1868-1947. ed. New York, Cincinnati [etc. ] American book company
Size: 1602px × 1560px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorand, bookcentury1900, bookdecade1910, booksubjectbotany
