Answer to Question 1
ANS: a, c, d
Follicular phase, ovulatory phase, and luteal phase are part of the ovarian cycle. Secretory and menstrual phases are part of the endometrial cycle.
Answer to Question 2
ANS: teratogen
Teratogens (drugs, radiation, and infectious agents that can cause development of abnormal structures in an embryo) and a variety of internal and external developmental events may cause structural and functional defects.