An organ not formed from ectoderm is

The organ not formed by ectoderm is

The organ not formed by ectoderm is

Which one is not formed from ectoderm?

Which one is not formed from ectoderm?

which organ is formed from two different individuals in mammals .

The major organic product formed from the following reaction :

The major organic product formed from the following reaction:

Assertion : Originwise hair are epithelial tissue which are of ectodermal origin. Reason : Epithelial tissue can be formed from mesoderm and endoderm also.