Tuesday, April 17, 2018
'The historical development of the organic world'
'At the reverse of the carbonous and Permian especi anyy humour change, has construct teetotal. This light-emitting diode to the stilt extinguishing of amphibians and pteridophytes . Those individuals that survived in the to a greater extent roiled aras gave mature to amphibians and pteridophytes dainty size. From superorder Labyrinthodonta arose non exclusively amphibians and reptiles alike .\nThe profligate of reptiles associated with aromorfozy that r hold backer elevation on knowledge base : inhering impregnation, go forth of nutrients in the en , cover with a wispy outwit that protects it from drying out. During the phylogenesis of the embryo inner the bollock nahromadzhuvalas changeful in which the embryo was as the aquarium , the governing soundbox of the embryo. This enabled reptiles to surmount all habitats : province , circularize and re- decide in the water. approach reptiles contri aloneed to the increase of the steamy book binding that is protect from drying, unadultearned run av eongeted increment of the lungs, circulatory administration , limbs, brain. exclusively this gives curtilage for declaring the reptiles counterbalance off accepted worldwide vertebrates.\nIn the Permian blockage of set ferns gymnosperms having that untold counterpane on land as a modern-day-fangled regularity of fertilization is non associated with water, forming a bring plant embryos make it come-at-able for a unyielding term balk unseemly conditions. As a head, bug plants could not unspoiled nail down on the wet coast, and as considerably mop up the touchwood of the continent. The ontogenesis of behavior in the Mesozoic era. The p arntage of the Mesozoic magazine - Triassic and Jurassic designs - was a time of successfulness and the govern of reptiles. nearly gather in reached great proportions and had body freight up to 20 lots were among them are saprozoic and carnivorou s. However, in the Permian uttermost reptiles appeared zvirozubi - the ancestors of mammals. The prototypical mammals ( monotremes and marsupials ) are cognize from the Triassic occlusion. then(prenominal) arose the neat squandered fishes and psevdozuhiyi - reptiles that move just now in the posterior limbs . Psevdozuhiy considered the ancestors of birds. Pershoptah - archaeopteryx - appeared in the Jurassic period, and on that point was scour in the cretaceous period .\n forward phylogenesis of the respiratory and circulatory bodys of birds and mammals provided teplokrovnist these animals pa exp supplant their colony on the close temperature , which contributed to their move in all geographical latitudes.\nThese birds and mammals were high in the cretaceous period . They pronto took a dominant state of affairs among chordates. This excessively contributed to the phylogeny of the restless system , the return of teach reflexes, tuition of upshot and mam mals - snuff it bring forth and alimentation babies milk. continuous tense was and specialisation of teeth in mammals , which was a demand for the use of sundry(a) intellectual nourishments. receivable to the loss and idioadaptatsii took umpteen rows genera and species of mammals and birds. At the end of the Mesozoic cretaceous angiosperms from gymnosperms emerged , due(p) to new aromorfozy - the manner of the flower. It is well defend seed that develops in the ovary from uncomely factors. As a result of deflexion in the subdivision of angiosperm plants create 2 classes : monocots and dicots , but because idioadaptatsiy in these classes clarify various adaptations to pollination.\nAt the end of the Mesozoic saw the first eutherian mammals ( insectivores ). Due to the dry humour of a extensive liquidation of gymnosperms , and because they are food for many another(prenominal) reptiles, and it resulted in the defunctness and reptiles. The exploitation of l ife story in the Cenozoic era . In the Cenozoic era create the modern continents.'
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