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m noat metameric animals, but they do have some repeated body features, f you wa

ID: 209294 • Letter: M

Question

m noat metameric animals, but they do have some repeated body features, f you wanted to demonstrate this to someone, from what class would you draw examples? A- Class Gastropoda B Class Polyplacophora eo Suge C Class Bivalvia D. Class Cephalopoda E. Any of these classes would be equally useful demonstrations 29. A biologically plausible reason that burrowing earthworms have solid segmental walls but nonburrowing and parasitic annelids often have partial septa is of. the ability to expand segments was not disadvantageous during their evolution B. the nonburrowing worms were primitive and had not yet developed full walls C. nonburrowing worms are halfway between roundworms and fully-segmented earthworms D. that it permits fragmentation and regeneration of body parts, which earthworms need because they are in enyironment, but internal parasites do not need this. E. None of the choices are correct. do not burrow and the loss 30. In whiptail lizards, only females exist. Two females court and one assumes the posture of the missing stimulate the other female to ovulate. No fertilization can occur, so this is a case of A. hermaphroditism. B. bisexual reproduction. male lizard to parthenogenesis. D. sexual reproduction since mating behavior is required. E a need for further research since only primitive animals reproduce asexually. 31. Parthenogenesis is A. asexual but haploid by means of internal self-fertilization. exual means of reproduction involving budding. C. asexual reproduction by splitting or fission into several new individuals reproduction where unfertilized eggs develop into mature individuals without fertilization. Esexual reproduction by cross-fertilization between hermaphrodites. 32. Diploblastic organisms lack which germ layer(s)? A Endoderm B. Ectoderm C. Mesoderm D. Mesoderm and endoderm from the lining 33. A strange system of reproduction, where there are no permanent reproductive organs and gametes arise the body cavity and spill through ruptures of the body wall is found in some A. insects B. marsupial mammals C. polychaete annelid worms. D. whiptail lizards birds

Explanation / Answer

the answers to your above question are below->

28-class Gastropoda

29->a

30->parthenogenesis

31->d

32->c

33->whiptall lizards

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