. Plant studies; an elementary botany. Botany. 152 PLANT STUlilKS :ui siciii ))(! cut and jihuigeil into water stained with an aniline color called eosin,* the ascending water will stain its patliway. Al'Ler some I inie sections throngli the stem "will show Ihat tjie water has t|-a\-eled upwards through it, and tlie stain will point out the regioii of the stem used in the mo\ement. Jn general, , tlie cai'lion dioxide is ahs(irhed directly frdui the air hy the ;\'es, and the water is ab- sorhed hy the root from the suil, a]id moves n}iwai'ds tlirough the stem ii
. Plant studies; an elementary botany. Botany. 152 PLANT STUlilKS :ui siciii ))(! cut and jihuigeil into water stained with an aniline color called eosin,* the ascending water will stain its patliway. Al'Ler some I inie sections throngli the stem "will show Ihat tjie water has t|-a\-eled upwards through it, and tlie stain will point out the regioii of the stem used in the mo\ement. Jn general, , tlie cai'lion dioxide is ahs(irhed directly frdui the air hy the ;\'es, and the water is ab- sorhed hy the root from the suil, a]id moves n}iwai'ds tlirough the stem iido (he leaves. An interesting fact ahout these raw materials is that thev are very common waste products. They are waste; products hecause in most life-pi'ocesses tliey cannot l)e taken to jiieces and used. 1'lie fact that they can he used in })hotosyntliesis shows that it is a very re- markaJjle life pro(/ess. 1*^© lh= ('-) ('Jildroplus/s.âHaving some knowledge of the raw materials used in w. 11- V 1 n ,1 r photosynthesis, and their Uii- \! j''iitoiNa,ii\inK]ii'^cii]nrn- sourci'S, it is necessai'y (o '''""'â "â consider the iilani, nuichinery arranged for the woi'k. lu the workiug leaf cells it is discovered that the c(jlor is due to (he preseu(/e of vei'y small green bodies, known as chhu'ojibvll li(]dies or rliloro- j/lu^h (see i''ig. 1-15). 'hliese consist of the living substance, known as l)rotdj)lasm, a,iid the gi'eeu called cldoro- [ihyll ; therefore, each cbloroplast isali\iug body (pldstid) slaJucd green, it. is iu these cliloi-o[ilasts that the W(U'k of pholosyuthesis is (huie. in oi'der that they may work it is necessary foi' tiiem lo obtain a sup]il\- (d' euerijy froiu some outside source, and the soui'ia; used iu is sun- light. The green (cliloropliyll) seems to be used in absorbing the necessary energy fi-om sunlight, (he. Tin; eiillUlleliL'l- j^'rudljS el' J-ed ink USII.'lll)- ,s(illUiells et
Size: 2022px × 1236px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1900
