Multiple Choice
Which of the following structures are derived from the ectoderm during human development?
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28. Human Development
Introduction to Human Development
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What is the correct sequence of stages during the cleavage period in early embryonic development?
A
Zygote, Morula, Blastula
B
Blastula, Morula, Zygote
C
Morula, Zygote, Blastula
D
Zygote, Blastula, Morula
Verified step by step guidance1
Understand that cleavage is a series of rapid mitotic divisions of the zygote that leads to the formation of a multicellular structure.
Identify the initial stage: The process begins with the zygote, which is the fertilized egg cell.
Recognize the next stage: The zygote undergoes several rounds of cell division to form a solid ball of cells known as the morula.
Identify the final stage: The morula continues to divide and forms a hollow structure called the blastula.
Sequence the stages: The correct sequence of stages during the cleavage period is Zygote, Morula, Blastula.
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