The New Encyclopaedia Britannica, Volume 23Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 247
... plants is known as paleobotany . The oldest known fossils on the Earth are plants : very simple types , such as blue - green algae , have been found in rocks as old as 2,000,000,000 years . The earliest land plants , which occur in ...
... plants is known as paleobotany . The oldest known fossils on the Earth are plants : very simple types , such as blue - green algae , have been found in rocks as old as 2,000,000,000 years . The earliest land plants , which occur in ...
Page 342
... plants , and his book , essentially a herbal manual , was intended primarily as a guide for plant collection . Well ... plants . He gave precise descriptions , and his beautiful woodcuts of plants estab- lished the tradition traceable to ...
... plants , and his book , essentially a herbal manual , was intended primarily as a guide for plant collection . Well ... plants . He gave precise descriptions , and his beautiful woodcuts of plants estab- lished the tradition traceable to ...
Page 529
... plants 8 : 1087c malformations of plants 11 : 380b gibberellic acid , a gibberellin ( q.v. ) present in both fungi and higher plants . Gibberellins belong to a group of hormones ( q.v. ) that pro- mote plant growth . - barley enzyme ...
... plants 8 : 1087c malformations of plants 11 : 380b gibberellic acid , a gibberellin ( q.v. ) present in both fungi and higher plants . Gibberellins belong to a group of hormones ( q.v. ) that pro- mote plant growth . - barley enzyme ...
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