A) an implant B) a fetus C) an embryo D) a nucleus
A) in the fallopian tube B) in the uterus C) in the ovary D) in the vagina
A) vagina B) placenta C) uterus D) amnion
A) ear cells B) blood cells C) lung cells D) eye cells
A) the umbilical cord B) the developing nerves C) the amniotic fluid D) the spinal cord
A) a newborn B) an embryo C) a fetus D) a zygote
A) 48 B) 25 C) 40 D) 17
A) 3 years B) 2 years C) 1 year D) 5 years
A) There is loss of flexibility. B) Eyesight deteriorates. C) Permanent teeth appear. D) The reproductive system matures.
A) several million B) one C) six to ten D) a few hundred
A) It becomes an organ in the developing embryo. B) It contains very few blood vessels. C) It’s an exchange organ between mother and embryo. D) It contracts to help the mother give birth.
A) the uterus B) labor C) full-term D) the placenta
A) the umbilical cord B) the uterus C) the amnion D) a fallopian tube
A) Baby teeth appear B) You begin to read C) You need little sleep D) You begin to run |