Exam 45: Animal Reproductive Systems

Which of the following is a similarity between spermatogenesis and oogenesis in vertebrate animals? Both spermatogenesis and oogenesis ________.

Which statement about human reproduction is false?

Many aphid species switch between asexual and sexual reproduction. Which of the following is only used during sexual reproduction?

Once uterine contractions have begun in labor, the female body releases several hormones that act in a positive feedback loop. This feedback loop ________.

The primary difference between estrous and menstrual cycles is that ________.

Which of the following is a similarity between a mature human sperm and an ovum that has completed meiosis? Both gametes ________.

Which of the following changes is most likely to occur as an immediate result of an injection of LH into a male mammal?

An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus (usually it implants in the oviduct). Which of the following best explains why such a pregnancy would not be successful?

Refer to the following figure, which diagrams the reproductive anatomy of the human male, to answer the question. In the figure, which letter identifies a paired structure that transports sperm during an ejaculation?

Which of the following is not properly paired?

Which of the following structures in females is analogous in function to the vas deferens in males?

In male mammals, excretory and reproductive systems share ________.

A female lizard is kept isolated in a zoo for five years. Then, to everyone's surprise, she lays four viable eggs that hatch to produce offspring that are genetically identical to her. What type of reproduction most likely occurred?

Which structure is formed by the follicular cells that remain behind in the ovary following ovulation in humans?

Among humans, which of the following male and female genital structures consist mostly of erectile tissue?

Which of the following describes an advantage of internal fertilization over external fertilization?

For which of the following is the number the same in human males and females?

Females of many insect species, including honeybee queens, can store sperm in which of the following structures?

Use the following information to answer the question. For your internship at the local zoo, you have been assigned to help with the new orangutan-breeding program. Little is known about orangutan reproductive hormones, but hormone feedback cycles are often the same in closely related animals. You have been asked to use your knowledge of the interactions of human reproductive hormones to recommend injections to promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit. Which of the following hormones would you inject a few days before the male visit if you want to induce ovulation when he arrives?

Refer to the following figure, which diagrams the reproductive anatomy of the human female, to answer the question. In the figure, which letter identifies the site of implantation in a normal human pregnancy?