Multiple choice

Cavitation begins to occur at which of the following stages of embryogenesis?

  1. 8-celled

  2. 16-celled

  3. 32-celled

  4. 64-celled

  5. 150-celled

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After compactation, the embryo is in the morula stage (32 cells). Cavitation occurs next in which the outermost layer of cells secrete fluid into the morula.