Internal fertilizationa. can prevent the drying out of gametes and zygotes.b. must take place on land.c. is practiced by humans.d. requires that males have a penis.e. Both a and c are correct.

Gastrulation... A. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg B. Refers to the fusion of haploid gametes to give a diploid zygote C. Produces an embryo with either two or three distinct cell layers D. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space E. None of the above

Which of the following statements is NOT about follicle stimulating hormone (FSH) in the male reproductive system? Select one: a. It increases the production of inhibin. b. It is suppressed by increased levels of testosterone and inhibin. c. It is stimulated by GnRH and LH. d. It stimulates the seminiferous tubules to produce sperm.

Which of following scenarios does NOT result in the development of male reproductive organs? Select one: a. Increasing levels of testosterone b. XY chromosomes c. Presence of SRY gene d. Absence of interstitial cells