_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the a. amnion. b. yolk sac. c. cembryoblast. d. trophoblast.

Question

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Answer 1

Textbook Question

Chapter 29, Problem 1DYKB

_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the

a. amnion.
b. yolk sac.
c. cembryoblast.
d. trophoblast.

Expert Solution & Answer

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

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Answer 2

Textbook Question

Chapter 29, Problem 1DYKB

_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the

a. amnion.
b. yolk sac.
c. cembryoblast.
d. trophoblast.

Expert Solution & Answer

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

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Answer 3

Textbook Question

Chapter 29, Problem 1DYKB

_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the

a. amnion.
b. yolk sac.
c. cembryoblast.
d. trophoblast.

Expert Solution & Answer

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

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Answer 4

Textbook Question

Chapter 29, Problem 1DYKB

_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the

a. amnion.
b. yolk sac.
c. cembryoblast.
d. trophoblast.

Expert Solution & Answer

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

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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:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

Answer 8

Expert Solution & Answer

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Summary Introduction

Introduction:

Fertilization is defined as the process by which male and female gametes are the fuse to form a zygote and it is further developed into an embryo. The zygote form contains a diploid number of chromosomes.

Answer 12

Answer to Problem 1DYKB

Correct answer:

Trophoblast is the outer layer of the blastocyst which is attached to the wall of the uterus at implantation. Therefore, option d. is correct.

Answer 13

Explanation of Solution

Reason for the correct statement:

Option d. is given as “trophoblast”. Trophoblast is an outer layer of cells that surrounds the fluid-filled cavity. These cells will form chorion. It plays an important role in implantation of the embryo and also in the formation of the placenta.

Hence, option d. is correct.

Reasons for the incorrect statements:

Option a. is given as “amnion”. It is an extraembryonic membrane formed from epiblast layer. It is a thin membrane. Hence, option a. is incorrect

Option b. is given as “yolk sac”. It is the first extraembryonic membrane and is formed from hypoblast layer. Hence, option b. is incorrect.

Option c. is given as “embryoblast”. It is the inner mass of the blastocyst. Hence, option c. is incorrect.

Hence, options a., b., and c. are incorrect.

Answer 14

Conclusion

Trophoblast is the outer layer of the blastocyst which is involved in embryo implantation.

Answer 15

Ch. 29.1 - What distinguishes the pre-embryonic period from...Ch. 29.2 - Prob. 2WDYL Ch. 29.2 - Prob. 3WDYL Ch. 29.2 - How many cells are present initially in the...Ch. 29.2 - Prob. 5WDYL Ch. 29.2 - Prob. 6WDYL Ch. 29.2 - Prob. 7WDYL Ch. 29.2 - What are the two cell layers of the bilaminar...Ch. 29.2 - Which cell layers give rise to each of the three...Ch. 29.2 - Prob. 10WDYL

_____ 1. The outer layer of the blastocyst that attaches to the wall of the uterus at implantation is called the a. amnion. b. yolk sac. c. cembryoblast. d. trophoblast.

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Answer to Problem 1DYKB

Explanation of Solution

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Chapter 29 Solutions