mastering biology chapter 36 review

in the human ovarian cycle, ovulation is triggered by a sharp rise in LH. what is the cause of this sharp rise?

a rise in estradiol from the follicle.

a hermaphrodite is ___

an individual with both male and female reproductive systems

which of the following is accurate about parthenogenesis?

appears rare in vertebrates

what is an advantage of internal fertilization?

can occur outside of aquatic or marine habitats

the human female's external reproductive structures are ___

clitoris, two sets of labia, and vaginal opening.

the secretory phase of the uterine cycle

coincides with the luteal phase of the ovarian cycle

which of the following is a means of sexual reproduction?

fusion of egg and sperm

pheromones are ___

generally effective at very low concentrations

which hormone is produced by the human embryo during the first trimester and is necessary for maintaining a pregnancy?

hCG (human chorionic gonadrotopin)

examples of birth control methods that prevent the production or release of gametes are ___

hormonal contraception and sterilization the

the ectoderm germ layer gives tise to the ____

jaws, teeth, and epidermis of the skin

which of the following correctly describes how the production of human sperm and eggs differs?

meiosis is an uninterrupted process in males, whereas in females it resumes when a follicle matures and is only completed when a sperm penetrated the egg.

which of the following is an accurate statement about sexual reproduction?

most animals produce offspring by sexual reproduction

which of the following is a difference between reproduction of humans (and other primates) and all other mammals?

only humans (and other primates) have menstrual cycles.

In which location does fertilization usually take place in a human female?

oviduct

which of the following is the correct path that sperm travel in leaving the body of a human male?

seminiferous tubule--> epididymis--> vas deferens--> ejaculatory duct--> urethra

which of the following is the correct sequence of stages in the development of sperm in the process of spermatogenesis?

spermatogonial stem cells--> spermatogonium--> primary spermocyte --> secondary spermocyte--> early spermatid--> sperm cell

the "twofold cost" of sex refers to ___

the fewer reproductive offspring produced by individuals of species that have two sexes.

certain maternal diseases, drugs, alcohol, and radiation are most dangerous to embryonic development during ___

the first three months, when organogenesis is occurring

which of the following is an accurate statement concerning the cleavage stage of early development?

there is no increase in mass.

what is the relationship between lydig cells and sertoli cells?

leydig cells stimulate production of sperm cells, and sertoli cells nourish developing sperm.

which of the following is an accurate statement concerning mating behavior in asexually reproducing species?

mating behavior is a stimulus that can help bring about ovulation in asexually reproducing species