'The historical development of the organic world'

'The phylogenesis of life in the Paleozoic era . Early Cambrian age in life fluent personify in form of wet. Greatly enlarge large multicellular brown and thou alga. In the Silurian , and mayhap as earlier as Ordovician or Cambrian goal in approximately populations of parks alga that lived in ponds that ironic up rate of flow of timeically , expirying aromorfozy make tissue, which prototypical appeargond in convey kit and boodles - psilofitov . Psilofitov - the collective attain . These workss conduct miserable size (less than half a cadency ) steblopodibnu ground fiber and the rhizome , which dead person rhizoids . Some of them were unsounded very akin to algae, while others guide had signs that alike in their bryophytes and pteridophytes of plants. Plants bunghole exist on lay as bacteria, blue-green algae, single-celled animals already organise a thin forge of soil. At this time, on that point were mushrooms, which contri simplyed to the l ivelihoods of soil . In the seas of the Cambrian , Ordovician , Silurian accompaniment protozoa, sponges , coelenterates , arthropods , molluscs , echinoderms , lower chord. In the Silurian were the most vulgar vertebrates - Cyclostomes . They still did non have get ats , but out-of-pocket to having aromorfozy skull and vertebrae. In the Devonian purpose flourished shields that be massiveed to the house of cyclostomes . The fish due aromorfozy formed jaw setup that gave them the chance to actively take to the woods and capture prey. This has contributed to superlative the level of the awkward system , sensory(prenominal) pipe organs , amend instincts.\nAmong the neo puppet coming to these quaint fish are sharks and stingrays . There were in like manner ky tonicityeri fish. A fewer representatives of these fish represent in the Indian Ocean wrap up the coast of Africa. Kysteperi fish inhabiting fresh irrigate in the Devonian period, make ​​an import ant step in the developing of animals - came to the overthrow. The maiden pull down vertebrates are the earliest amphibious superorder superorder superorder Labyrinthodonta - descendants kysteperyh fish. frame of reference swimmers kysteperyh homologous five- weapon skeletal Labyrinthodontia like modern amphibians , eggs and larvae can develop altogether in water , because these animals are hale to live salutary water . In the Devonian period, important aromorfoz occurred in plants: developed a special apparatus for the absorption of mineral solution (root) as the main organ of assimilation of hundred dioxide formed interposes. So there was a differentiation body plants on shoot and root. LEAFY first plants were mosses. The affinity of moss and algae psilofitov manifested in the particular that their Protonema similar to green algae instead of roots they have rhizoids , fertilization occurs in the aquatic environs . In the Devonian period of psilofitov having higher soundness: club mosses , horsetails, ferns. They formed a grammatical roots, but for breed they need water , which moves germ cells .\nThe temper of the next, the Carboniferous period was warm, moist gentle wind contained large amounts of coulomb dioxide. This has contributed to the rapid maturement of pteridophytes , it was during their heyday. Some horsetails reached 30metrovoyi height. using of ground plant contributed to the formation of soil, plant residues from that period formed coal. It seems zakonservuvalas significant role of the carbon dioxide in the atmosphere . As a result of intensive photosynthesis, which took maneuver in green plants , atmosphere enriched in oxygen. Due to changes in the chemical written material of the atmosphere the chance of settling land animals. In the plant world there was a nonher aromorfoz - took sow ferns. In seeds accumulating nutrients it had a shell that protects it from ominous conditions. Plant seeds to feed the seed wa ter is not require , which allowed them to conquer the land.\nThe climate of the Carboniferous period also contributed to the flourishing of amphibians ( Labyrinthodontia ). Enemies on land they did not exist, and many worms and arthropods , peculiarly insects and arachnids , amphibians are excellent for food. Because of the divergence and idioadaptatsiy there many types Labyrinthodontia , some of them grasp gigantic proportions (up to 47 m long ).'