e-book
Text Book of Botany
In some such way it is possible that living matter originated from non-living at some period in the evolution of the earth when the conditions for its formation existed. In order that the organic world should have developed from the first living matter, one of the original properties of the latter must have been a capability of continued existence among its surroundings. It must have been capable of variation and of retaining the new characters appearing in this way, of growth, i.e. the increase of itself at the cost of foreign substances, and of reproduction, i.e. multiplication by separation into a number of parts. Some observers have recently described the origin of microscopic structures which behave similarly to living beings in bouillon anil other organic culture^ media when exposed to the action of radium Botany, or the science of plants, may be divided into a general and a special part. In the general part, the structure and functions
of plants as such will be considered ; in the special part, the particular structure and functions of the separate orders of plants will discussed.
The study of the structure of plants is called MORPHOLOGY ; that of their functions PHYSIOLOGY. In the general part, morphology and physiology will be treated separately; in the special part, conjointly.
Tidak ada salinan data
Tidak tersedia versi lain