The endoderm,ectoderm,and mesoderm form during the ________ period.
A) fetal
B) zygotic
C) germinal
D) embryonic
Correct Answer:
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Q10: Which of the following structures of an
Q11: The germinal period is approximately _ long.
A)one
Q12: Which of the following structures of an
Q13: Which of the following terms refers to
Q14: During implantation,the zygote attaches to the wall
Q16: A fertilized egg is also known as
Q17: Harry was born with defects in the
Q18: Implantation takes place about _ after conception.
A)10
Q19: The circulatory system develops from the
A)ectoderm.
B)mesoderm.
C)endoderm.
D)trophoderm.
Q20: The embryonic period lasts _ weeks after
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