Multiple Choice
Why was the evolution of the extraembryonic membranes crucial for colonisation of land by the vertebrates? Extraembryonic membranes ________.
A) provide an aqueous environment for embryo development
B) provide nutrients that produce energy for development
C) direct morphogenesis within the embryo
D) give rise to crucial organ systems, like the heart and brain
Correct Answer:
Verified
Correct Answer:
Verified
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