A research group claims that they have discovered microscopic fossilized embryos, including some at the blastula stage, but other researchers are skeptical. Finally, one student develops a technique for splitting the embryos in half to reveal the substructure. Cutting open the first blastocyst embryo, the student is very excited. "It is a blastula!" she shouts,"Look, you can see the ________ inside!"
A. neural tube
B. granulosa cells
C. hollow blastocoel
D. archenteron
Answer: C
You might also like to view...
Parasitism is a density-independent factor of population control
Indicate whether the statement is true or false.
What organelle modifies new polypeptides and sorts proteins and lipids?
a. nucleus b. mitochondria c. peroxisomes d. lysosomes e. Golgi body
Plant cells typically achieve cytokinesis by:
A. chromosome condensation. B. forming a cleavage furrow that pinches the cell into two. C. binary fission. D. chromosome elongation. E. forming a cell plate across the middle of the cell.
Marsha says she sometimes has ketoacidosis. What kind of diabetes is she more likely to have, and how did she develop ketoacidosis? Why is ketoacidosis dangerous, and how can she detect it in time?
What will be an ideal response?