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Home Q & A Board Biology-Related Homework Help General Biology
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fokkdsn fokkdsn
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6 years ago
Which of the following is a single-layered, fluidfilled
  ball of cells?
  a. cleavage
  b. morula
  c. gastrula
  d. zygote
  e. blastula

Question 2

A zygote forms
  a. as soon as a sperm cell penetrates an egg cell.
  b. when the embryo implants in the uterine wall
  c. when a fertilized egg divides to produce two
  cells.
  d. after at least two divisions of a fertilized egg.
  e. after many divisions of a fertilized egg.
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kamehameha2014kamehameha2014
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#1
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6 years ago
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fokkdsn Author
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6 years ago
Thank you, thank you, thank you!
julymontalvo
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Yesterday
This site is awesome
Holly72492
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2 hours ago
Thanks
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