Evolution and animal life, an elementary discussion of facts, processes, laws and theories relating to the life and evolution of animalsD. Appleton, 1908 - 489 páginas |
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Página vii
... plasm , 27 ; Physical make - up of protoplasm , 28 ; The cell , 30 ; The simplest animals , 32 ; Differentiation and animal types , 32 ; The genealogical tree , 36 ; Primary conditions of life , 38 ; Origin of life , 41 ; Spontaneous ...
... plasm , 27 ; Physical make - up of protoplasm , 28 ; The cell , 30 ; The simplest animals , 32 ; Differentiation and animal types , 32 ; The genealogical tree , 36 ; Primary conditions of life , 38 ; Origin of life , 41 ; Spontaneous ...
Página 26
... plasm the physical basis of life . This protoplasm too must be organized in a particular way in order that life may persist in the organism . It must appear in two conditions , and proto- plasmic stuff representing these two conditions ...
... plasm the physical basis of life . This protoplasm too must be organized in a particular way in order that life may persist in the organism . It must appear in two conditions , and proto- plasmic stuff representing these two conditions ...
Página 27
... plasm from all lifeless matter . These particular combinations are certain albuminous compounds or proteids , composed of C , H , O , N , and S , and their complexity is extreme : the atoms in a single molecule often number more than a ...
... plasm from all lifeless matter . These particular combinations are certain albuminous compounds or proteids , composed of C , H , O , N , and S , and their complexity is extreme : the atoms in a single molecule often number more than a ...
Página 28
... plasm makes no satisfying revelation to us explanatory of the qualities of this life stuff . How is it then with the physical structure of protoplasm ? We know that many simple chemical substances put together in particular physical ...
... plasm makes no satisfying revelation to us explanatory of the qualities of this life stuff . How is it then with the physical structure of protoplasm ? We know that many simple chemical substances put together in particular physical ...
Página 38
... plasm , the basis of life , is a fluid , although thick and viscous . To be fluid its components must be dissolved or suspended in water . In fact , all of the really living substance in an animal's body contains water . This water , so ...
... plasm , the basis of life , is a fluid , although thick and viscous . To be fluid its components must be dissolved or suspended in water . In fact , all of the really living substance in an animal's body contains water . This water , so ...
Outras edições - Ver tudo
Evolution and Animal Life: An Elementary Discussion of Facts, Processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Evolution and Animal Life: An Elementary Discussion of Facts, Processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Evolution and animal life, an elementary discussion of facts, processes ... David Starr Jordan,Vernon Lyman Kellogg Visualização integral - 1907 |
Palavras e frases frequentes
actual adaptation adult animals animals and plants ants apes appear artificial selection bees beetles biologists birds body breeding butterfly called causes centrosome changes CHAPTER characters chromatin chromosomes color and pattern common crab Darwin degeneration degree descent differentiation division egg cell embryo environment existence fact factors fauna female fertilized fishes forms fossils genus germ cells habit hatched heredity honeybee host hybrid individuals influence inheritance insects instinct islands isolation kinds of animals known larva larvæ live lower male mammals matter ment modified mutations natural selection naturalists nest nucleus offspring organic evolution origin Origin of Species parasites parent phenomena plasm primitive produced protoplasm Protozoa race relation reproduction reptiles resemblance Sacculina sea anemone sexual sexual selection sheep species species-forming sperm spines stage structure substance tail theory tion traits tree variation various vertebrates Weismann wings workers young