In humans, sperm are produced in the a. spermatophore. b. seminiferous tubules. c. epididymis. d. urethra.

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Answer 1

Textbook Question

Chapter 42, Problem 1MC

In humans, sperm are produced in the

a. spermatophore.
b. seminiferous tubules.
c. epididymis.
d. urethra.

Expert Solution & Answer

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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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

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Answer 2

Textbook Question

Chapter 42, Problem 1MC

In humans, sperm are produced in the

a. spermatophore.
b. seminiferous tubules.
c. epididymis.
d. urethra.

Expert Solution & Answer

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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Answer 3

Textbook Question

Chapter 42, Problem 1MC

In humans, sperm are produced in the

a. spermatophore.
b. seminiferous tubules.
c. epididymis.
d. urethra.

Expert Solution & Answer

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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Answer 4

Textbook Question

Chapter 42, Problem 1MC

In humans, sperm are produced in the

a. spermatophore.
b. seminiferous tubules.
c. epididymis.
d. urethra.

Expert Solution & Answer

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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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

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.

Answer 8

Expert Solution & Answer

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.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

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 12

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”.

Answer 13

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.

Answer 14

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.

Answer 15

Ch. 42.1 - Prob. 1TC Ch. 42.1 - Prob. 2TC Ch. 42.1 - Prob. 1CSC Ch. 42.1 - Prob. 1CYL Ch. 42.1 - Prob. 2CYL Ch. 42.1 - Prob. 3CYL Ch. 42.2 - Mammalian sperm dont live very long after...Ch. 42.2 - Prob. 1TC Ch. 42.2 - Prob. 1HYEW Ch. 42.2 - describe the human male and female reproductive...

In humans, sperm are produced in the a. spermatophore. b. seminiferous tubules. c. epididymis. d. urethra.

Solution Summary: The author explains that in humans, sperms are produced in the seminiferous tubules.

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