Which statement about events during the neurulation stage of development is true?
A) Neurulation is the first stage in gastrulation.
B) The notochord organizes overlying ectoderm.
C) The anterior end of the notochord becomes the brain.
D) The likelihood of a neural tube defect is lowered if a pregnant woman restricts her intake of folic acid.
E) The notochord is a neural structure.

Question

Quizplus · Accepted Answer

During neurulation, the notochord forms underneath the ectoderm and helps to organize its development into the neural plate, which will eventually become the neural tube.

Answer: C 
 The anterior (front) end of the notochord eventually becomes the brain, while the posterior (rear) end forms the tailbone.

Answer: D 
 Research has shown that taking folic acid before and during early pregnancy can significantly lower the chances of neural tube defects, such as spina bifida, from occurring.

Option A is incorrect because neurulation is a separate process that occurs after gastrulation. Option E is also incorrect because while the notochord plays a crucial role in neural development, it is not itself a neural structure.

Which Statement About Events During the Neurulation Stage of Development