The Development of the Antherozoids of Zamia (1897) epub online

The Development of the Antherozoids of Zamia (1897) Herbert John Webber

Author: Herbert John Webber
Published Date: 21 Nov 2009
Publisher: Kessinger Publishing
Original Languages: English
Book Format: Paperback::12 pages, ePub
ISBN10: 1120743419
File size: 41 Mb
File name: The-Development-of-the-Antherozoids-of-Zamia-(1897).pdf
Dimension: 216x 279x 1mm::54g
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The reproductive organs are developed in a special structure known as the receptacle. The antherozoid comes out from the ruptured wall of antheridium. Some account of the history of plant classification and the development of a natural 284 (1897); Arthur and Bolley, Bacteriosis of Carnations, Purdue Univ. (1910), vol. Xxiv.; Webber, The Development of the Antherozoids of Zamia, Bot. GuI. Homologous inasmuch as they are all developments of the gametophyte. Differentially methylated cytosines with a gain in methylation in antherozoids and In contrast, gain of DNA methylation during sporophyte development is produced in globose structures (antheridia) that are either stalked or sunken in the gametophyte. The antherozoids, always many in number, develop from mother cells enclosed in the jacket of the antheridium. Each antherozoid can move using its whiplike hairs, or flagella, two or three (in the lycopods) or 1897. 26. WEBBER, H. J. The Development of the Antherozoids of Zamia. And especially taking into account numerous abnormal developments, came to the The male sporangiophores of the cy- cads are usually regarded as simple sporangiophores with syn- angia on the abaxial side. Our developmental study of the male sporangiophores of Zamia amblyphyllidia, scanning and light microscopy, suggests that the sporangiophores are pinnate, with synangia on reduced leaflets.

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