. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 216 MiyUTK Ay ATOMY OF FLUW' PLANTS vacuoles is the cell sap. It is sometimes colored. Tlie red and yellow colors of health}' leaves are generally due to colored cell sap in some of the cells, masking the green of the cliloroph3dl granules. Bright colors of fruits and flowers also are generally due partly to colored cell sap. Tlie cell sap may contain sugar in storage, as it does in the root of the sug
. Outlines of botany for the high school laboratory and classroom (based on Gray's Lessons in botany) Prepared at the request of the Botanical Dept. of Harvard University. Botany; Botany. 216 MiyUTK Ay ATOMY OF FLUW' PLANTS vacuoles is the cell sap. It is sometimes colored. Tlie red and yellow colors of health}' leaves are generally due to colored cell sap in some of the cells, masking the green of the cliloroph3dl granules. Bright colors of fruits and flowers also are generally due partly to colored cell sap. Tlie cell sap may contain sugar in storage, as it does in the root of the sugar beet and in the stem of the sugar cane. Certain suhstances belonging to the class oi formed mat- ters (non-protoplasmic) are of such frequent occuri-ence and are produced in masses of such size in the cell that they should be brieflv described. 499. Starch. ^Starch is the form in \\diich elaborated plant food is most <Minnnonly stored. It is laid down in the Cells of storage organs, tubers, in rounded granules (Fig. 363). A\'hen these are considerably magnilied they are seen to be stratified, in evidence of the mode of dep(jsition of the starch in successive layers. If the granules ay. 363. Starch culls Iroiu Potato tuber. closely 2''"'kcd to- gether, tliey m;i\ Ijceome tiiignhtr io- stead of rounded. 500. Protein' gran- ules and crystals. — Ihe external stor- age cells of wlieat grtuns affoi'd exam- ples of protein gran- ules (Fig. 364 ). The contents of these cells make up the so-called "luten of ,^°9SOOQQOOO00C ^^ -^O c^ r> <:; Cr-^ c^o? co c::::^ 1». 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 Leavitt, Robert Greenleaf, 1865-1942; Gray, Asa, 1810-1888. Field, forest, and garden botany. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
