. High school botanical note book [microform]. Botany; Botanique. .S4 en}'/' rooA MO us t ypes. ends MojwtinK it. Tim nucule is a row of colls of which the highest is the , and the unswers, in fort, to the archoKoniuni of tho iryophytes I ter„lo,, It is inthis plant called th^ cnrpo,,,,. nnnn. Just below it is a Klohular body „,,ulo up of eiL-ht '.uingular shield-shaped se,,' arrauKed about a cen- t lal ruvity. From t],e inner end of ouch segment several couedhlaments, of manycellseach, projectintothecavitv. At maturity the shields separate, aud t
. High school botanical note book [microform]. Botany; Botanique. .S4 en}'/' rooA MO us t ypes. ends MojwtinK it. Tim nucule is a row of colls of which the highest is the , and the unswers, in fort, to the archoKoniuni of tho iryophytes I ter„lo,, It is inthis plant called th^ cnrpo,,,,. nnnn. Just below it is a Klohular body „,,ulo up of eiL-ht '.uingular shield-shaped se,,' arrauKed about a cen- t lal ruvity. From t],e inner end of ouch segment several couedhlaments, of manycellseach, projectintothecavitv. At maturity the shields separate, aud the filaments even- tually break up into their constituent cells, each of which then liberates au antherossoid. The antherozoids make way down tho necks of the carpogonia and fertilise he Korm-cells. The spiral cells then harden, and form a hrm coat for tho spore within. As the plant decays in the autumn, these seed-like sporocarps, as they are now called, droi. off and fall to the bottom of tho water, where they germinate. On germination, they first I'.oduce a simple form to which the w,un^ iwo-emhryoh^^n .oen g,ve„, and from which arises the plant-body which boars the antheridia and carpogonia There is, therefore, displayed in this case an alternation of generations. Chara belongs to a group of plants known as Algse. They grow either itz the water or upon damp surfaces. They differ froni the Fungi principally in devebping chloro- , so that they are able to assimilate. In colour, the Aig« are often green, but ii, other cases the chlorophyll is obscured by the presence of other colours, such as brown and red. In the lowest forms of both Alg«3 and rung! reproduction takes place by sim,,le division of the ecus, m h,.her the entire contents of two similar adjacent cells coalesce to form a new one, from which the new p ant springs. This is tho pt'ocess of conjugation. In still higlier forms, as in Chara, reproduction tnkos place by fertilization.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1895
