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Definitions of Angiosperms

  1.   Plants which have their seeds encased or enclosed in a seed- vessel.
  2.   Any member of the more than 250, 000 species of flowering plants ( division Magnoliophyta) having roots, stems, leaves, and well- developed conductive tissues ( xylem and phloem). Angiosperms are often differentiated from gymnosperms by their production of seeds within a closed chamber ( the ovary). The Magnoliophyta division is composed of two classes, the monocotyledons ( Liliopsida) and dicotyledons ( Magnoliopsida).

Usage examples for Angiosperms

  1. Even the relative rank of the two chief divisions of the angiosperms the monocotyledons and dicotyledons, is a matter of question, as also which family in each of these divisions is to be considered the most perfect. ” – A Mechanico-Physiological Theory of Organic Evolution by Carl Von Nägeli
  2. The Origin of the Angiosperms – Darwin and Modern Science by A.C. Seward and Others
  3. “ Saporta, on the Evolution of Angiosperms – Darwin and Modern Science by A.C. Seward and Others
  4. “ To these elevated lands we may look for the development of the Angiosperms the birds, and the mammals. ” – The Story of Evolution by Joseph McCabe
  5. “ Sargant, Ethel, on the Evolution of Angiosperms – Darwin and Modern Science by A.C. Seward and Others
  6. Higher organisation, judged by the test of success, is thus purely relative to the changing conditions, a fact of which we have a striking illustration in the sudden incoming of the Angiosperms with all their wonderful floral adaptations to fertilisation by the higher families of Insects. ” – Darwin and Modern Science by A.C. Seward and Others
  7. The angiosperms seem, therefore, to have been at the least comparatively rare in these older secondary periods, when more space was occupied by the Cycads and Conifers. ” – The Student's Elements of Geology by Sir Charles Lyell
  8. The number of the Dicotyledonous Angiosperms is the most striking feature in so ancient a flora. ” – The Student's Elements of Geology by Sir Charles Lyell
  9. But the gap between this and the structural complexity and diversity of angiosperms is enormous. ” – Darwin and Modern Science by A.C. Seward and Others
  10. We will give some consideration later to the evolution of the Angiosperms – The Story of Evolution by Joseph McCabe
  11. But it is impossible to retrace the lines of development of the innumerable types of Angiosperms – The Story of Evolution by Joseph McCabe
  12. If, as we shall find some grounds for believing, the Angiosperms came from a type with a flower resembling in its complexity that of Mesozoic " Cycads," almost the whole evolution of the flower in the highest plants has been a process of reduction. ” – Darwin and Modern Science by A.C. Seward and Others
  13. “ I do not mean merely that the Angiosperms appear in force before its close, and were probably evolved much earlier. ” – The Story of Evolution by Joseph McCabe
  14. The so- called " hardwoods" are " Dicotyledons" or broad- leaved trees, a subdivision of the Angiosperms – Seasoning of Wood by Joseph B. Wagner
  15. We have noticed one of these suggestions in connection with the origin of the Angiosperms – The Story of Evolution by Joseph McCabe