CAMPBELL BIOLOGY IN FOCUS-W/MASTR.BIO.
CAMPBELL BIOLOGY IN FOCUS-W/MASTR.BIO.
3rd Edition
ISBN: 9780134875040
Author: Urry
Publisher: PEARSON
bartleby

Videos

Question
Book Icon
Chapter 36, Problem 1TYU
Summary Introduction

Introduction:

Parthenogenesis is a mode of asexual reproduction in which an egg develops into an embryo without fertilization.

Expert Solution & Answer
Check Mark

Answer to Problem 1TYU

Correct answer:

Only a single parent is required for parthenogenesis, as fertilization is not needed. Hence, fertilization is not required for the development of an egg into an embryo. Therefore, option (D) is correct.

Explanation of Solution

Reason for the correct statement:

Parthenogenesis is observed in lower plants and animals. The egg or gamete produced by the female develops into a complete organism without fusion with the male gamete.

Option (D) is given as “An egg develops without being fertilized”.

“In parthenogenesis, an egg develops without being fertilized”. Thus, it is the right answer.

Hence, option (D) is correct.

Reasons for the incorrect statements:

Option (A) is given as “An individual may change its sex”.

An individual changing its sex is not parthenogenesis; it is called sequential hermaphroditism. Therefore, it is a wrong answer.

Option (B) is given as “Groups of cells grow into new individual”.

In parthenogenesis, a single egg develops into a complete organism, not from the groups of cells. Therefore, it is the wrong answer.

Option (C) is given as “An organism is first a male and then a female”.

An organism that develops as a male, and then develops into a female is called a protandrous hermaphrodite. Therefore, it is the wrong answer.

Hence, options (A), (B) and (C) are incorrect.

Conclusion

Parthenogenesis is an asexual mode of reproduction in which an organism develops from an unfertilized egg.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Which statement is NOT true regarding alcohol consumption during pregnancy?   a. The surgeon general states that pregnant women should abstain from alcohol.     b. Alcohol crosses the placenta freely and deprives the developing fetus of both nutrients and oxygen.     c. Fetal alcohol syndrome cannot be treated, only prevented.     d. No harm will result to the infant unless the mother is actually drunk.
Which of the following is not a mechanism on how contraceptive pills work to prevent pregnancy?   A. thinning the endometrium to prevent implantation   B. inhibition of follicular development and suppression of ovulation   C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly   D. stimulates the production of high testosterone levels
What would happen if the trophoblast did not secrete hCG upon implantation of the blastocyst? a. The cells would not continue to divide. b. The corpus luteum would continue to produce progesterone and estrogen. c. Menses would flush the blastocyst out of the uterus. d. The uterine mucosa would not envelop the blastocyst.
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY