The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 272
... process is the same - the reproductive . cells have to melt together before they can give rise to new individuals ; they ... processes have DIVISION CONJUGATION The life - history of Copromonas , a simple flagellate Protozoan , highly ...
... process is the same - the reproductive . cells have to melt together before they can give rise to new individuals ; they ... processes have DIVISION CONJUGATION The life - history of Copromonas , a simple flagellate Protozoan , highly ...
Página 323
... process as it seemed . Processes are there at work which are of the utmost import- ance in our own lives ; but in the tadpole they are more readily accessible to experi- ment . The specific sensitiveness of different tissues , their ...
... process as it seemed . Processes are there at work which are of the utmost import- ance in our own lives ; but in the tadpole they are more readily accessible to experi- ment . The specific sensitiveness of different tissues , their ...
Página 778
... process , like these processes that we are studying in dogs . As another variant of this discriminating education , the animal can be taught to distinguish between combinations of stimuli . For example , it can learn that a whistle by ...
... process , like these processes that we are studying in dogs . As another variant of this discriminating education , the animal can be taught to distinguish between combinations of stimuli . For example , it can learn that a whistle by ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
Otras 62 secciones no se muestran.
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Términos y frases comunes
active algæ animals arthropods bacteria become birds blood body bones brain branches called capillaries carbon carbon dioxide cells Cenozoic changes chemical chromosomes colour creatures crustaceans digestive Echinoderms eggs elaborate embryo Eocene Everyman evolution example eyes fact female fertilized fish flatworms flowers fluid forms fossils gametes genes germ-plasm glands grow growth heart human Ichthyosaurs important individual insects intestine kidneys kinds land larvæ layer less limbs liver living things lobster lungs male mammals marsupials matter means ment microscopic million molluscs mouse mouth movements muscles mutations nervous system normal notochord Obelia organs ovary ovum oxygen pair parasitic phylum plants polyps produced proteins prothallus protozoa reproduction reptiles round secretion sense-organs sexual shell skeleton skin species spermatozoa sperms spores stage starfish stomach structure substances surface swim tail teeth thyroid tiny tion tissue to-day tube types variations various vertebrates whole worms