[Campbell Biology P.1105] According to Figure 47.16 and the accompanying text on neurulation,... | Practice Question

According to Figure 47.16 and the accompanying text on neurulation, what is the specific role of microtubules during the initial stages of neural plate formation?

  • A: To contract and give cells a wedge shape.
  • B: To help cuboidal ectodermal cells form a continuous sheet.
  • C: To help elongate the cells of the neural plate.
  • D: To pinch off the neural plate to form the neural tube.

Explanation

Figure 47.16 and the corresponding text state that 'microtubules oriented from dorsal to ventral in a sheet of ectodermal cells help lengthen the cells along that axis' Annotation 2 in the figure also explicitly says 'Microtubules help elongate the cells of the neural plate.' .