Question

What are the four motility groups protozoans are divided into? List major details and one example of each of the 4 categories from #26 What kingdom do algae and protozoans belong to? What are some similarities and differences between flatworms (cestodes/trematodes) and roundworms (nematodes)? . What are the 3 hypotheses for where viruses originated?

Answer 1

O Four Mortility groups of protozoans are al Amoeboid protozoare.or Sarcodines by Flagellated protozoany or zooflagellatel c) Ciliated Protozoans or Ciliates d> Sporozoans. Amoeboid pro foroans or amoeba which more by using of foot like structure called pseudopodia eg. Entamoeba Histolytica ii) Hlagenated Protozoans which move with the help of whip like structures caued flagella. eg-Trypanosoma Gambiense ay Ciliates, which move by using haid like Structures called Cila. eg. Par amecium Coudatum iv) Sporozoans are Sesile s do not move at all eg. Plasmodium ☺ digae and protozoani belongs to Kingdom PROTISTA. a similarity - Both Roundworm and flatworms use diffusion to respire and for circulation of substances around their body.. - They does not need to circulate oxygen they diffuse it from skin

67 Differnce Flatworm has a thin, dorsoventrally flattend body. . Round worms are cylindrical in shape and fine point at one end. - Flatworm belong to platyhelmithes phylum. Roundworm belongs to Phylum Nematoda. ① z Hypotheses, where viruses were originated a) The progressive hypothesis - virus originated through a progrelive process. Mobile genetic element, piece of genetic material capable of moving with a genome b) The Regressive Hypothesis - vinuses oniginated via reductive process. of the virus - first hypothesis- virus may have been the first replicating entities. - viruses come from different places with different mechanism. No clear data , explanation, for the origin of viruses exists.