Multiple Choice
During which stage of pregnancy are all major organs formed in a developing human embryo?
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20. Development
Animal Development
Back20. Development
Animal Development
- Multiple ChoiceIn animal development, which of the following processes results in the formation of the three primary germ layers?11views
- Multiple ChoiceWhich of the following processes occurs in animal development but not in plant development?419views
- Multiple ChoiceWhich of the following correctly represents the typical sequence of early animal development?9views
- Multiple ChoiceThe development of a zygote into a blastula is called __________.1511views1rank
- Multiple ChoiceWhich stage of development is common in amphibians but not seen in mammals?1069views
- Multiple ChoiceWhich of the following describes the correct sequence of stages during embryogenesis?1076views
- Multiple ChoiceA sea urchin sperm penetrates the jelly coat of an egg and adheres to receptor proteins on the egg's surface as a result of __________.1039views1rank
- Multiple ChoiceHow does a zygote differ from an ovum?3770views1rank
- Multiple ChoiceAfter a sperm penetrates an egg, a fertilization envelope forms. This envelope __________.1189views1rank
- Multiple ChoiceThe period of repeated cell divisions without significant cell growth results in formation of the blastula and is called __________.970views1rank
- Multiple ChoiceDuring cleavage the single large zygote is converted into a __________.1097views1rank
- Multiple ChoiceHow is the animal hemisphere of a frog blastula different from the vegetal hemisphere?1580views1rank
- Multiple ChoiceWhat is the most likely trigger of egg activation?1061views1rank
- Multiple ChoiceWhich of the following is true of meroblastic cleavage?1031views1rank