Titlebook: Reproductive Biology of Plants; B. M. Johri,P. S. Srivastava Book 2001 Narosa Publishing House 2001 Befruchtung.Bryophyte.Viruses.algae.ba

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Reproductive Biology of Bacteria,by sex is reproduction. A brief survey of the biological systems, however, clearly reveals that most plants, many of the simpler animals, and essentially all microorganisms have effective means of asexual reproduction. This process is highly efficient in the propagation of the species. Sex has a sec

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Reproductive Biology of Fungi,xual reproduction is more important for propagation of the species as it is repeated several times during the life cycle and results in production of numerous exact copies of the parent. Sexual reproduction provides for meiotic recombination. Generally, it takes place only once in a life cycle. Some

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Reproductive Biology of Pteridophytes,amae (kruptos = hidden, gamos = marriage). Eichler (1883) regarded cryptogamae as a sub-division of the Plant Kingdom which included ‘Club mosses’, ‘Horse-tails’, and ‘ferns’. The pteridophytes occupy an intermediate position between the bryophytes and gymnosperms. Engler (1886) suggested the term ‘

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Reproductive Biology of Gymnosperms,the world’s dominant vegetation throughout the Late Palaeozoic (350–250 my BP), Mesozoic (141–65 my BP) and steadily declined thereafter. In the Tertiary (65 my BP) while the gymnosperms declined, the angiosperms evolved steadily. Thereafter, the angiosperms became dominant and the gymnosperms occup

poliosis

Cytology and Genetics of Reproduction,ion of variability. Undoubtedly, the production of replicas is the principal objective, but the capacity of adaptation to changing environments is dependent on the variability that can be generated in an individual. Such variability is normally achieved in sexual reproduction through recombination A

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