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A blastula is A. a digestive organ. B. the innermost germ layer. C. a layer of embryological tissue. D. a hollow ball of cells in an embryo.
Weegy: C. a layer of embryological tissue. (More)
Question
Updated 7/6/2015 2:59:37 AM
1 Answer/Comment
A blastula is a hollow ball of cells in an embryo.
Added 7/6/2015 2:59:36 AM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [7/6/2015 3:19:32 AM]
Gametes are formed by A. parthenogenesis. B. mitosis. C. fertilization. D. meiosis.
Weegy: C. fertilization (More)
Question
Updated 7/11/2012 4:34:13 PM
1 Answer/Comment
Gametes are formed by meiosis.
Added 7/11/2012 4:34:13 PM
This answer has been added to the Weegy Knowledgebase
The mammals whose offspring are little more than embryos are A. monotremes. B. marsupials. C. placentals. D. amphibians.
Weegy: The mammals whose offspring are little more than embryos are: B. marsupials. (More)
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Updated 1/25/2014 11:08:35 AM
0 Answers/Comments
All animals eat to obtain A. oxygen. B. ammonia. C. carbon dioxide. D. nutrients.
Question
Updated 149 days ago|3/2/2016 2:21:54 PM
1 Answer/Comment
All animals eat to obtain nutrients.
Added 149 days ago|3/2/2016 2:21:54 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by yumdrea [3/2/2016 7:49:50 PM]
A blastula is
Question
Updated 332 days ago|9/1/2015 12:05:54 AM
1 Answer/Comment

The blastula is an early phase of embryonic development that occurs when the fertilized egg has divided multiple times, but before its cells have become differentiated.

Added 332 days ago|9/1/2015 12:05:54 AM
This answer has been confirmed as correct, not copied, and helpful.
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