File:The natural history of plants, their forms, growth, reproduction, and distribution; (1902) (14783570015).jpg

Identifier: naturalhistoryof01kern (find matches)
Title: The natural history of plants, their forms, growth, reproduction, and distribution;
Year: 1902 (1900s)
Authors: Kerner von Marilaun, Anton, 1831-1898 Oliver, Francis Wall, 1864- Macdonald, Mary Frances Ewart Busk, Marian Balfour, Lady
Subjects: Botany
Publisher: London, Blackie
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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Text Appearing Before Image:
Pine (Paiidanus lUilis). From a photograph. RELATION OF STRUCTURE TO FUNCTION IN ROOTS.
Text Appearing After Image:
F\z. 1S7.—Stilt-roots of Mangroves (Rhizoph, ora eonjiiijata). 7C0 RELATION OF STRUCTURE TO FUNCTION IN ROOTS. reserves of food necessary for the founding of a new establishment. It would beof no use, and contrary to the economy of plants, if reserve materials were de-posited in any other parts, say in the stem or roots, since these parts shrivel anddry up as soon as the seeds are dispersed, and the energy expended in the manu-facture and storage of starch, fat, sugar, and other reserve food would be expendedin vain. The roots of annual plants are therefore satisfied with delivering thenecessary water and the required amount of food-salts to the plant during its shortperiod of vegetation, and with providing a suitable attachment to the substratum;they waste no energy in founding subterranean reservoirs. In biennial andperennial plants it is quite otherwise. Biennial plants—as well-known examplesof which may be taken the various roots used as vegetables, the Carrot (DaucusCarota),

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