The Development of the Antherozoids of Zamia (1897)The Development of the Antherozoids of Zamia (1897) free
- Author: Herbert John Webber
- Date: 21 Nov 2009
- Publisher: Kessinger Publishing
- Original Languages: English
- Format: Paperback::12 pages
- ISBN10: 1120743419
- File size: 53 Mb
- File name: The-Development-of-the-Antherozoids-of-Zamia-(1897).pdf
- Dimension: 216x 279x 1mm::54g
Book Details:
The Development of the Antherozoids of Zamia (1897) free. 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. The reproductive organs are developed in a special structure known as the receptacle. The antherozoid comes out from the ruptured wall of antheridium. 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 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
Read online The Development of the Antherozoids of Zamia (1897)
