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