* not completed

. The term that refers to the increase in luteinizing hormone within an hour after copulation in a female rabbit is

estrus. correct incorrect

spontaneous ovulation. correct incorrect

induced ovulation. correct incorrect

delayed implantation. correct incorrect

* not completed

. _______ is the process in which the female produces eggs that do not require sperm to develop into an adult.

Parthenogenesis correct incorrect

Hermaphroditism correct incorrect

Cloning correct incorrect

Haploid zygoticism correct incorrect

* not completed

. Which statement regarding semelparity is true?

An octopus is considered a semelparous species. correct incorrect

Most species of animals are semelparous. correct incorrect

A human is considered a semelparous species. correct incorrect

Semelparity is very uncommon among insects. correct incorrect

* not completed

. The hormone melatonin has strong effects on _______, and therefore also affects reproduction.

the nutritional environment correct incorrect

the social environment correct incorrect

photoperiod correct incorrect

temperature correct incorrect

* not completed

. The process by which fertilization is decoupled from the full development of the embryo is called

postpartum estrus. correct incorrect

embryonic diapause. correct incorrect

ovulation. correct incorrect

sperm storage. correct incorrect

* not completed

. An animal that begins as female and later changes its sex to become a male is most accurately referred to as

a hermaphrodite. correct incorrect

protandrous. correct incorrect

protogynous. correct incorrect

a sequential hermaphrodite. correct incorrect

* not completed

. The spike of luteinizing hormone during the menstrual cycle of a woman causes

menstruation. correct incorrect

ovulation. correct incorrect

estrus. correct incorrect

endometrial regression. correct incorrect

* not completed

. After the follicle ruptures during _______, it becomes the _______.

menstruation; corpus luteum correct incorrect

estrus; secondary oocyte correct incorrect

fertilization; secondary oocyte correct incorrect

ovulation; corpus luteum correct incorrect

* not completed

. Which physiological process takes place because of a hormone-level drop?

Ovulation correct incorrect

Growth of the corpus luteum correct incorrect

Estrus correct incorrect

Menstruation correct incorrect

* not completed

. In a female mammal, _______ cells are capable of producing androgens.

Leydig correct incorrect

theca correct incorrect

granulosa correct incorrect

Sertoli correct incorrect

* not completed

. Which statement regarding estrogen in late pregnancy is false?

Estrogen levels increase during late pregnancy. correct incorrect

Estrogen stimulates the release of oxytocin. correct incorrect

Estrogen stimulates myometrial cells in the uterine smooth muscle to produce receptors for oxytocin. correct incorrect

Estrogen stimulates myometrial cells in the uterine smooth muscle to produce gap junctions. correct incorrect

* not completed

. Sperm are produced in the

seminiferous tubules. correct incorrect

seminal vesicles. correct incorrect

vas deferens. correct incorrect

epididymis. correct incorrect

* not completed

. The hormone that directly stimulates Leydig cells to secrete androgens is

testosterone. correct incorrect

estrogen. correct incorrect

luteinizing hormone. correct incorrect

follicle-stimulating hormone. correct incorrect

* not completed

. Which statement about the trophoblast is true?

Cells from the trophoblast include cells from the developing embryo and cells that will help form the placenta. correct incorrect

Cells from the trophoblast contribute to the formation of the placenta. correct incorrect

Cells from the trophoblast will ultimately develop into the newborn individual. correct incorrect

Cells from the trophoblast are produced immediately following the acrosomal reaction. correct incorrect

* not completed

. Fertilization usually takes place in the

oviduct. correct incorrect

ovary. correct incorrect

uterus. correct incorrect

cervix. correct incorrect

* not completed

. During mammalian pregnancy, implantation of the _______ usually takes place in the _______.

zygote; uterus correct incorrect

zygote; endometrium correct incorrect

blastocyst; myometrium correct incorrect

blastocyst; endometrium correct incorrect

* not completed

. In a primate or a horse, the hormone that prevents the corpus luteum from degenerating is

progesterone. correct incorrect

estrogen. correct incorrect

chorionic gonadotropin. correct incorrect

follicle-stimulating hormone. correct incorrect

* not completed

. Which hormone can be measured to detect early pregnancy in a primate?

Chorionic gonadotropin correct incorrect

Progesterone correct incorrect

Estrogen correct incorrect

Follicle-stimulating hormone correct incorrect

* not completed

. Which hormone has a more pivotal, clearly defined function in females than in males?

Luteinizing hormone correct incorrect

Oxytocin correct incorrect

Prolactin correct incorrect

Both oxytocin and prolactin correct incorrect

* not completed

. Which hormone is not directly involved in the process of lactation?

Prolactin correct incorrect

Dopamine correct incorrect

Thyrotropin-releasing hormone correct incorrect

Vasopressin correct incorrect