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- Compare and contrast the structures of the zygote, morula, and blastocyst.Make a table to identify amle and female homologues and describe it common function. Minimum of 7 organs.At which stage of embryonic development does the embryo have a blastopore? Group of answer choices A.Blastula B. Zygote C. Morula D. Gastrula
- Which of the following is an INCORRECT statement? Question 6 options: a) The early embryo of a higher animal is never like a lower animal, but only like its early embryo. b) During the first three stages of development, blastomeres become smaller by way of each embryonic cleavage. c) The space inside of the neural tube will eventually become the space inside of the digestive system. d) A zygote results from the union of sperm and egg.Identify the characteristics of protostome development: Select one or more: O spiral cleavage pattern indeterminate cleavage radial cleavage pattern O blastopore becomes the anus O blastopore becomes the mouthStudy 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?
- The female gametophyte of the moss is seen in the photo below (I.s. at 4x and then at 40 x) shows that the tip contains the structures where male gametes are produced.Which of the following rows correctly identifies a difference between blastocysts and morula? Select one: A. Blastocyst Morula Contains trophoblast and a zygote Contains 8 cells that are totipotent B. Blastocyst Morula Contains inner cell mass with germ layers Contains 8 cells that are totipotent C. Blastocyst Morula Contains trophoblast with germ layers Contains 16 cells that can become any cells in the human body D. Blastocyst Morula Contains trophoblast and inner cell mass Contains 16 cells that can become any cells in the human bodyDescribe the movement of cells during early development that change an embryo from a blastula to a gastrula. Name the three main germ layers, describe their relative locations, and list the fates of the cells descended from each layer. What is the name and significance of the opening in the gastrula?