Which of the following is true about the ectoderm of a blastocyst?

Question

A

It develops into the muscles and blood

B

It develops into the skin and nervous system.

C

It develops into the digestive and respiratory system.

D

None of the above.

Answer 1

Have you done your reading?  Did you find the answer there?

Answer 2

Are you just copying and pasting your homework here?

If you are that lazy…. Google the answer.