Bio 2 Ch. 46 Dynamic Study Module
What is the relationship between Leydig cells and Sertoli cells?
Leydig cells stimulate the production of sperm cells, and Sertoli cells nourish developing sperm
Seasonal changes can be important to reproduction because?
~environmental stresses that could affect offspring survival can vary with season ~availability of resources to invest in gestating offspring can vary with season ~availability of resources on which young can feed can vary with season ~migration and other seasonal movement patterns can affect the possibility of finding a mate
Which of the following is the correct path that sperm travel when 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 during the process of spermatogenesis?
~spermatogonial stem cell ~spermatogonium ~primary spermatocyte ~secondary spermatocyte ~early spermatid ~sperm cell
In the human female ovarian cycle, ovulation is triggered by a sharp rise in luteinizing hormone (LH). What is the cause of this sharp rise?
a rise in estradiol from the follicle
At what point does the secondary oocyte complete meiosis?
after the sperm penetrates the oocyte
From a single cell, oogenesis in a mammal will produce?
an egg and 2 or 3 polar bodies
A hermaphrodite is?
an individual with both male and female reproductive systems
Which of the following choices correctly lists the four phases of the sexual response cycle in their proper sequence?
excitement, plateau, orgasm, and resolution
An ovarian follicle undergoes several changes during the human female's menstrual cycle. Which of the following sequences is correct, beginning with the oocyte?
follicle development, ovulation, and corpus luteum development
Which of the following is a means of sexual reproduction?
fusion of sperm and egg
Pheromones are?
generally effective at very low concentrations
Which part of the human sperm carries a haploid set of chromosomes?
head
Which reproductive method is the most prevalent in mammals?
internal fertilization
What is an advantage of internal fertilization?
internal fertilization can occur outside of aquatic or marine habitats
Which of the following is an accurate statement concerning mating behavior in asexually reproducing species?
mating behavior is a stimulus that can help to bring about ovulation in asexually reproducing species
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 the reproduction of humans (and other primates) and the reproduction of all other mammals?
only humans (and other primates) have menstrual cycles
In mammals, meiosis to produce the female egg cell is initiated in the?
ovary
Immediately after ovulation, an egg is collected into the?
oviduct
Which of the following is an accurate statement about parthenogenesis?
parthenogenesis appears rarely in vertebrates
Which of the following is the least effective method of birth control?
rhythm method
Vestibular (Bartholin's) glands?
secrete lubricating fluid
Which of the following is not a function of the placenta?
secreting hCG
Individuals clustered in the same area that release their gametes into the water at the same time are engaging in?
spawning
Some insect females are able to store sperm in __________ until environmental conditions are favorable for the development of their offspring
spermathecae
The human female's external reproductive structures are?
the clitoris, two sets of labia, and vaginal opening
The "two-fold" cost of sex refers to?
the lower number of reproductive offspring produced by individuals of species that have two sexes
Birth control pills contain synthetic estrogen and progesterone. How do these hormones prevent pregnancy?
they inhibit the pituitary from secreting FSH and LH, preventing ovulation
Which structure is part of the excretory and reproductive systems in males?
urethra
