How does a zygote differ from an ovum?
a) a zygote has more chromosomes
b) a zygote is smaller
c) a zygote is much larger
d) a zygote divides by meiosis
A woman has several miscarriages. Her doctor suspected that a hormonal insufficiency was causing the lining of the uterus to breakdown, as does during menstruation, terminating her pregnancies. Treatment with which of the following might help her pregnancy?
a) oxytocin
b) LH
c) FSH
d) progesterone
In human development, ectoderm cells migrate through the primitive streak to form……..
a) endoderm
b) mesoderm
c) the chorion
d) the yolk sac
The process by which a tissue causes another tissue to differentiate is called…..
a) gastrulation
b) metamorphosis
c) cleavage
d) induction
Which of the following has three germ layers?
a) embryonic disc
b) blastula
c) gastrula
d) trophoblast
Which of the following consists of both foetal and maternal tissue?
a) umbilical cord
b) placenta
c) amnion
d) allantois
