Q: What is the blastocyst called after implantation? Choices: - trophoblast - an nucleus - an produce - an embryo A:
an embryo

Q: The primary amine in which the nitrogen atom is attached directly to a benzene ring has a special name, what is it? Choices: - nitrate - cyanide - aldehyde - aniline A:
aniline

Q: What are the ultimate source of genetic variation? Choices: - parasites - gravity - proteins - mutations A:
mutations

Q: Gymnosperms have seeds but do not have what? Choices: - leaves - stems - roots - flowers A:
flowers