Cocker
发表于 2025-3-25 04:35:51
Reproductive Biology of Angiosperms,In flowering plants reproduction may be sexual, parthenogenetic or by adventive embryony (see Johri 1984, Johri et al. 1992).
CLASH
发表于 2025-3-25 11:19:50
Future Studies,In the 20th century, while the study of structure and function of reproductive organs in plants has brought out many fascinating features, some controversial issues have also arisen. Some of these unanswered questions are mentioned here.
evasive
发表于 2025-3-25 12:10:22
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圆木可阻碍
发表于 2025-3-25 16:49:35
Reproductive Biology of Pteridophytes,orse-tails’, and ‘ferns’. The pteridophytes occupy an intermediate position between the bryophytes and gymnosperms. Engler (1886) suggested the term ‘Embryophyta’ to include bryophytes, pteridophytes, and spermatophytes. Tippo (1942) considered ‘Tracheophyta’ to include pteridophytes and spermatophytes.
chiropractor
发表于 2025-3-25 23:01:39
Cytology and Genetics of Reproduction,endent on the variability that can be generated in an individual. Such variability is normally achieved in sexual reproduction through recombination Along with sexual reproduction, which brings about variability, reproduction also takes place through asexual means to produce normal prototypes.
债务
发表于 2025-3-26 02:16:39
Concluding Remarks, The universal occurrence of two generations—gametophyte and sporophyte—and their functional significance was established through the classic comparative work of Hofmeister (1869). The impact of this discovery stimulated much discussion of life cycle evolution and the origin of morphological differences between the gametophyte and sporophyte.
Aprope
发表于 2025-3-26 05:24:07
bryophytes, pteridophytes, gymnosperms and angiosperms, each chapter written by an expert in the field. Special emphasis is placed on the truly comparative approach illustrating the vast range from simplicity to complexity in structure and function with respect to the various organisms.978-3-642-50135-7978-3-642-50133-3
荒唐
发表于 2025-3-26 11:58:34
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confederacy
发表于 2025-3-26 14:30:09
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离开就切除
发表于 2025-3-26 19:59:24
Replication of Plant Viruses,ic disease was not caused by a bacterium or any corpuscular organism. He called this agent ‘contagium vivum fluidum’. Since then, the science of virology has come a long way and has played an important role in our understanding of modern biology. The isolation and crystallization of tobacco mosaic v