Menstruation results in the discharge of __________.

Compared to polar bodies, the amount of cytoplasm found in an animal egg cell is __________.

Which of the following choices correctly lists the four phases of the sexual response cycle in their proper sequence?

In males, FSH __________.

Which of the following statements about oogenesis and spermatogenesis is correct?

Which of the following characterizes parthenogenesis?a. An individual may change its sex during its lifetime.b. Specialized groups of cells grow into new individuals.c. An organism is first a male and then a female.d. An egg develops without being fertilized.

This graph plots the rise and fall of pituitary and ovarian hormones during the human ovarian cycle. Identify each hormone (A–D) and the reproductive events with which each one is associated (P–S). For A–D, choose from estrogen, LH, FSH, and progesterone. For P–S, choose from ovulation, growth of follicle, menstruation, and development of corpus luteum. How would the right-hand side of this graph be altered if pregnancy occurred? What other hormone is responsible for triggering this change?

What term describes the mode of asexual reproduction in which offspring develop from unfertilized eggs?a. parthenogenesisb. buddingc. regenerationd. fission

In male mammals, excretory and reproductive systems sharea. the vas deferens.b. the urethra.c. the seminal vesicle.d. the prostate.