The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
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Página 174
... green alga , the red algæ , and the brown algæ , as distinct from the green algae already mentioned . The blue - green alga are simple in structure , some single - celled , some fila- mentous , some aggregated into gelatinous globules ...
... green alga , the red algæ , and the brown algæ , as distinct from the green algae already mentioned . The blue - green alga are simple in structure , some single - celled , some fila- mentous , some aggregated into gelatinous globules ...
Página 569
... green of plants . " " They are green because of their chlorophyll ; and their chlorophyll is green because it absorbs the red and the violet parts of the spectrum to obtain energy for pulling the carbon out of carbon dioxide . There ...
... green of plants . " " They are green because of their chlorophyll ; and their chlorophyll is green because it absorbs the red and the violet parts of the spectrum to obtain energy for pulling the carbon out of carbon dioxide . There ...
Página 579
... green plants in the form of nitrates dissolved in the soil water or in the water in which they float . All the other substances which plants need for con- struction - phosphorus , sulphur , calcium , magnesium and the rest - are brought ...
... green plants in the form of nitrates dissolved in the soil water or in the water in which they float . All the other substances which plants need for con- struction - phosphorus , sulphur , calcium , magnesium and the rest - are brought ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
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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