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Phantasy [73]
3 years ago
7

The ______ becomes the placenta. a. yolk sac b. chorion c. amnion d. allantois

Biology
1 answer:
LekaFEV [45]3 years ago
3 0
I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
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What color is produced upon the addition of methyl red indicator to a culture of a Gram negative bacilli in MR-VP broth if the o
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Bright cherry red color is produced upon the addition of methyl red indicator to a culture of a Gram negative bacilli in MR-VP broth if the organism used the mixed acid pathway of fermentation.

What is MR-VP test?

  • As part of the IMViC testing, Methyl Red (MR) and Voges-Proskauer (VP) broth is utilized as the medium in which both the Methyl Red and Voges-Prosakuer tests can be conducted.
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Learn more about the MR-VP test with the help of the given link:

brainly.com/question/27962086

#SPJ4

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