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Please explain how different types of development patterns (metamorphosis) in insects contribute to the insects class s uccess.
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- Distinguish between holometabolous development and hemimetabolous development and give 2 insect orders that undergo one of each typeExplain one key process involved in the development of insects from one instar stage to another.Elaborate on one key process involved in the development of insects from one instar stage to another.
- Explain the difference between holometabolous and hemimetabolous metamorphosis in insects, including stages of each.From a 24-hour chick embryo, provide the answers in the following: Pairs of somites in a 24-hour chick embryo Germ layer/s that forms the head process What begins the formation head of process Germ layer/s that form the proamnion Explain why the notochord is not visible in areas where the somites are seenIdentify four functions of invertebrate neurohormones and describe the regulation of insect development.
- Reproduction is usually sexual with both male and female sexes, however asexual reproduction does exist with several unique adaptations. a) Discuss comprehensively the types of parthenogenesis and give an example of insect of each type. b) Enumerate and briefly explain four major factors that influence the ability of the female to produce eggs and the number that are ovipositedThe species Taenia saginata is a parasitic worm of humans. The parasite's life cycle is as follows: Hermaphroditic adults live in the small intestine cavity of an infected human. The adult worm consists of rings that are produced in the anterior region of the worm, in which there is production of male gametes which fertilize female gametes then these rings (called proglottids) detach from the posterior end of the worm and exit in the external environment through the anus of the infected human. The eggs resulting from fertilization, present in the proglottids, are released and can infect a bovid if they are ingested along with grass. In the bovid, the developing eggs are particularly localized in the muscles of the bovid and turn into a shape called a cysticercus (each egg becomes a cysticercus). 1-Specify which species is the definitive host of the parasitic worm, justifying your answer 2- Specify the type of parasitism of this worm, justifying your answer 3-Specify which is (are) the…Name, compare, and contrast the two major types of insect metamorphosis.
- Describe hormonal control of metamorphosis in insects, including the action of each hormone and where each is producedStudy the sea star development slides, including early and late stages and identify the following stages and structures: zygote, two cell stage, morula (stage), blastula (stage), blastocoel (cavity), archenteron (cavity), ectoderm (layer), endoderm (layer), gastrula (stage). **See Table 52.1, Section 52.3 & 52.4 in textbook ** Why is it useful to study the development of sea stars (Echinodermata) when studying human development? What do the two have in common?Spermatogenesis usually occurs during the ___________ and continues in the _________ stage in some insects. The _________ is composed of germ cells and somatic mesodermal cells. Each follicle contains a large _________ that apparently serves as trophic function. The spermatogonia undergo several __________ divisions to form the primary spermatocytes. The primary spermatocytes become _________ in somatic cells. The primary spermatocytes undergo _________ and produce haploid daughter cells in the next region. In the zone of maturation and reduction, the primary spermatocytes become _______ and _________ respectively. 10.The secondary spermatocytes become transformed into ____________. When the _________ in which they have been encased throughout spermatogenesis rupture, 12.the spermatozoa enter the vas efferens and the vas deferens and lodge in the _________. When the spermatozoa are released into the ducts, they remain in bundles known as _______ held together by a gelatinous…