Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 42, Problem 1MC

In humans, sperm are produced in the

  1. a. spermatophore.
  2. b. seminiferous tubules.
  3. c. epididymis.
  4. d. urethra.
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Summary Introduction

Introduction:

The male reproductive system consists of the testes which produce sex hormones and sperm; glands that secrete the substances which nourish and activate the sperm, and tubes that collect the sperm and conduct them out of the body. The sex hormone such as testosterone and sperm are produced at the beginning of the puberty.

Answer to Problem 1MC

Correct answer:

In humans, sperms are produced in the seminiferous tubules. Therefore, option (b)  is correct.

Option (b) is given as “seminiferous tubules”.

Explanation of Solution

Justify reason for the correct statement:

Sperms are produced in the testes, and each testes is filled with the coiled structure, called the seminiferous tubules in which sperm are produced. The inner lining of the seminiferous tubules contains two types of cells, the stem cells called the spermatogonial stem cells, which produce sperm, and the Sertoli cells which nourish the developing sperm.

Hence, option (b) is correct.

Justify reasons for the incorrect statements:

Option (a) is given as “spermatophore”.

Spermatophore is a protein capsule which contains a mass of spermatozoa. So, sperm is not produced in the spermatophore. Hence, it is a wrong answer.

Option (c) is given as “epididymis”.

Epididymis is a long folded tube-like structure in which sperm are stored and mature further. Hence, it is a wrong answer.

Option (d) is given as “urethra”.

The urethra conducts urine and sperm out of the body during urination and ejaculation respectively. Hence, it is a wrong answer.

Hence, options (a), (c), and (d). are incorrect.

Conclusion

Hence, sperms are produced in the seminiferous tubules. The inside wall of the seminiferous tubules contains the stem cells called the spermatogonial stem cells, which produce sperm.

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Students have asked these similar questions
Which of the following statements about the male reproductive system is false? a. The vas deferens carries sperm from the testes to the penis. b. Sperm mature in seminiferous tubules in the testes. c. Both the prostate and the bulbourethral glands produce components of the semen. d. The prostate gland is located in the testes.
Spermatogonia divide by mitosis to form a new spermatogonium and a. a sperm. b. spermatids. c. a primary spermatocyte. d. zygotes.
With regards to sperm, one of the following is true? a. Sperm survive in an acidic environment b. Travel through the vas deferens, then the ejaculatory duct, then the ureter during ejaculation c. Are stored in the vas deferens and last part of the epididymis
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