. Biology in America. Biology. 308 Biology in America and some of its roots are left embedded in the ground. Soon the young flexible branches turn and grow upward opposite to the direction of gravity. Roots, on the contrary, when placed in a horizontal position, or inverted so as to point upward, will soon respond to the pull of gravity and grow downward. A seedling is suspended with its rootlets im- mersed in a stream of water, and soon they bend and grow against the current of the stream. Touch the leaves of the Mimosa or sensitive plant and almost immediately the paired. MiNOSA OK Sensitive
. Biology in America. Biology. 308 Biology in America and some of its roots are left embedded in the ground. Soon the young flexible branches turn and grow upward opposite to the direction of gravity. Roots, on the contrary, when placed in a horizontal position, or inverted so as to point upward, will soon respond to the pull of gravity and grow downward. A seedling is suspended with its rootlets im- mersed in a stream of water, and soon they bend and grow against the current of the stream. Touch the leaves of the Mimosa or sensitive plant and almost immediately the paired. MiNOSA OK Sensitive Plant From Kerncr (translation l)y Oliver), "Natural History of Plants,' Henry Holt and Company. lobes of the leaflets fold together and the leaf itself droops slightly, soon however resuming their original position if un- disturbed. The flowers of some plants serve as insect traps. In the sun dew (Drosera) the leaves are covered with numerous little hairs or tentacles, which secrete a sticky fluid, v;hich glistens in the sun like drops of dew, whence the plant derives its common name of "sun ; Certain glands in the leaf secrete a digestive enzyme similar to the pepsin of an animal's stomach. If a drop of rain, or a grain of dust blown by. 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 Young, R. T. (Robert Thompson), b. 1874. Boston, R. G. Badger
Size: 1433px × 1743px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcontributor, bookpublisherbostonrgbadger, booksubjectbiology
