Mammals nourish their embryos by means of a(n) ____.
A) placenta
B) uterus
C) yolk sac
D) blastocyst
E) amnion
Correct Answer:
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Q15: Select the correct sequence of animal developmental
Q16: The yolk, which is a component of
Q17: The first cell of a new individual
Q18: The first child conceived using IVF was
Q19: A sexually reproducing animal that can produce
Q21: A penis becomes erect because of _.
A)
Q22: Ovulation is triggered by _.
A) high levels
Q23: What is the fate of most of
Q24: What is the order of anatomical structures
Q25: In the human male, sperm are produced
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