Question

What is a blastula? a solid ball of cells. a long sheet of cells. a hollow ball of cells. a hollow tube of cells.

Answer 1

Answer: a hollow ball of cells

The blastula s a hollow sphere of cells, referred to as blastomeres, surrounding an inner fluid-filled cavity called the blastocoele formed during an early stage of embryonic development in animals.

- Prodixy ☕

Answer 2

an animal embryo at the early stage of development when it is a hollow ball of cells.