Question 1

Which of the following best explains why a moist habitat is required for external fertilization in animals?

Accepted Answer

Moisture prevents the eggs from drying out and allows sperm to swim to the eggs.

Question 2

Which sequence correctly traces the path of sperm from production to release in the male reproductive system?

Accepted Answer

Seminiferous tubules → Epididymis → Vas deferens → Ejaculatory duct → Urethra

Question 3

Which gland produces the hormone that stimulates the release of FSH and LH from the anterior pituitary?

Accepted Answer

Hypothalamus

Question 4

Which of the following is a key difference between spermatogenesis and oogenesis?

Accepted Answer

All four products of meiosis become sperm in spermatogenesis, but only one becomes an egg in oogenesis.

Question 5

Which hormone is primarily responsible for stimulating the production of testosterone in males?

Accepted Answer

LH (Luteinizing hormone)

Question 6

A patient has a tumor that prevents the anterior pituitary from releasing FSH. Which process would be most directly affected?

Accepted Answer

Spermatogenesis

Question 7

Which of the following is properly paired?

Accepted Answer

Ovaries—contain oocytes

Question 8

Which structure in the female reproductive system is the usual site of fertilization?

Accepted Answer

Oviduct (fallopian tube)

Question 9

Which of the following best describes the role of Sertoli cells in the testes?

Accepted Answer

They nourish developing sperm cells.

Question 10

Which hormone is secreted by the hypothalamus and stimulates the anterior pituitary to release FSH and LH?

Accepted Answer

GnRH (Gonadotropin-releasing hormone)

Question 11

Which of the following is a function of the endometrium in the female reproductive system?

Accepted Answer

It provides a nutrient-rich environment for embryo implantation.

Question 12

Which of the following best describes hermaphroditism in animals?

Accepted Answer

Each individual has both male and female reproductive systems.

Question 13

Which of the following is true regarding the menstrual cycle?

Accepted Answer

The endometrium thickens in preparation for embryo implantation and is shed if pregnancy does not occur.

Question 14

Which of the following glands contributes secretions to semen?

Accepted Answer

Seminal vesicles

Question 15

Which of the following best explains why only one functional egg is produced during oogenesis?

Accepted Answer

Cytoplasm is unevenly divided during meiosis, resulting in one large egg and smaller polar bodies.

Question 16

Which hormone is primarily responsible for stimulating ovulation in the ovarian cycle?

Accepted Answer

LH (Luteinizing hormone)

Question 17

A scientist observes an animal species in which individuals can produce both eggs and sperm. Which reproductive strategy is most likely being observed?

Accepted Answer

Hermaphroditism

Question 18

Which of the following best describes the feedback regulation of testosterone production in males?

Accepted Answer

Testosterone inhibits the release of GnRH and LH through negative feedback.

Question 19

Which of the following is a correct statement about the timing of gamete production in humans?

Accepted Answer

Spermatogenesis occurs continuously from puberty through adulthood, while oogenesis has prolonged interruptions.

Question 20

Which of the following best describes the function of the prostate gland?

Accepted Answer

It produces secretions that are part of semen.

Animal Reproduction and Hormonal Regulation Study Guide

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