The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 492
... contain only euglenoids , less polluted waters contain blue - green algae , and relatively unpolluted waters contain Chloro- phyceae ( a class of green algae ) . Some freshwater algae grow as epiphytes , using aquatic flowering plants ...
... contain only euglenoids , less polluted waters contain blue - green algae , and relatively unpolluted waters contain Chloro- phyceae ( a class of green algae ) . Some freshwater algae grow as epiphytes , using aquatic flowering plants ...
Page 597
... contain them . In the buttercup family ( Ranunculaceae ) alkaloids are confined to a limited num- ber of genera . Among the other families containing alka- loids are barberry ( Berberidaceae ) , amaryllis ( Amaryl- lidaceae ) , pea ...
... contain them . In the buttercup family ( Ranunculaceae ) alkaloids are confined to a limited num- ber of genera . Among the other families containing alka- loids are barberry ( Berberidaceae ) , amaryllis ( Amaryl- lidaceae ) , pea ...
Page 598
... contain series of alternating double and single bonds , which give the molecules special properties . An example is pyridine Because these compounds , which are called aromatic , do not behave like typical unsaturated compounds , their ...
... contain series of alternating double and single bonds , which give the molecules special properties . An example is pyridine Because these compounds , which are called aromatic , do not behave like typical unsaturated compounds , their ...
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