Cleavage leads to formation of a multicellular, hollow _________?

Cleavage leads to formation of a multicellular, hollow _________?

درار ایک کثیر خلوی، کھوکھلی _________ کی تشکیل کا باعث بنتی ہے؟
Explanation
  • Cleavage during early development forms a blastula, a multicellular, hollow structure.
  • The blastula eventually undergoes further development to form the gastrula.