~Hello there!
Your question: In an eight-cell embryo of an organism, the cells of the upper tier are aligned over the cells of the lower tier at a slight angle. Which organism is it likely to be?
Your answer: In an eight-cell embryo of an organism, the cells of the upper tier are aligned over the cells of the lower tier at a slight angled. The organism is likely to be a sea cucumber.
Any questions ^?
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