Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
11th Edition
ISBN: 9781337393096
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 51, Problem 16TYU
Summary Introduction
To explain: The adaptive value of developing a placenta.
Introduction: The duration of pregnancy in humans is about 266 days on an average from the time of fertilization to the birth of the baby. The egg is fertilized in the oviduct and is converted into an embryo. The embryo gets implanted into the uterus on about seventh day of development. The organ of exchange between a mother and the embryo implanted in the uterus is known as the placenta.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
What happens in the process of fertilization in animals and humans?
Which of the following characterizesparthenogenesis?(A) An individual may change its sex during itslifetime.(B) Specialized groups of cells grow into newindividuals.(C) An organism is first a male and then a female.(D) An egg develops without being fertilized.
What are three notable features between the fertilized and unfertilized egg?
Chapter 51 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 1CCh. 51.1 - Prob. 2CCh. 51.2 - Prob. 3LOCh. 51.2 - Prob. 4LOCh. 51.2 - How do the mechanisms of fertilization ensure...Ch. 51.2 - Prob. 2CCh. 51.3 - Prob. 5LOCh. 51.3 - Contrast early development, including cleavage, in...
Ch. 51.3 - Prob. 1CCh. 51.3 - Prob. 2CCh. 51.3 - How do the amount and distribution of cytoplasm in...Ch. 51.4 - Identify the significance of gastrulation in the...Ch. 51.4 - Prob. 1CCh. 51.4 - How do the amount and distribution of yolk...Ch. 51.5 - Prob. 8LOCh. 51.5 - Prob. 9LOCh. 51.5 - Prob. 1CCh. 51.5 - Prob. 2CCh. 51.5 - Prob. 3CCh. 51.6 - Give the origins and functions of the chorion,...Ch. 51.6 - What are the roles of the chorion and amnion in...Ch. 51.6 - What are the functions of the allantois and yolk...Ch. 51.7 - Prob. 11LOCh. 51.7 - Prob. 12LOCh. 51.7 - Prob. 1CCh. 51.7 - How does the placenta form, and what is its...Ch. 51.7 - During which trimester does the cerebrum develop...Ch. 51.7 - Prob. 4CCh. 51 - The mechanism that leads directly to morphogenesis...Ch. 51 - Prob. 2TYUCh. 51 - Prob. 3TYUCh. 51 - Prob. 4TYUCh. 51 - Meroblastic cleavage is typical of embryos formed...Ch. 51 - Prob. 6TYUCh. 51 - Which of the following are mismatched? (a)...Ch. 51 - Prob. 8TYUCh. 51 - An unidentified substance (or substances) released...Ch. 51 - Which of the following consists of both fetal and...Ch. 51 - Prob. 11TYUCh. 51 - Prob. 12TYUCh. 51 - Prob. 13TYUCh. 51 - Prob. 14TYUCh. 51 - Prob. 15TYUCh. 51 - Prob. 16TYUCh. 51 - Prob. 17TYU
Knowledge Booster
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
- What is the adaptive significance of having sperm and egg produced at different times?arrow_forwardIn human beings, the correct sequence of events during reproduction is: (a) gamete formation, fertilisation, zygote, embryo (b) embryo, zygote, fertilisation, gamete formation (c) fertilisation, gamete formation, embryo, zygote (d) gamete formation, fertilisation, embryo, zygotearrow_forwardComponent of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and ectoderm d.Ectoderm and mesodermarrow_forward
- At what point in embryonic development does the gonadal ridge no longer exhibit bipotential? 1) week 6 2) week 7 3) week 10 4) week 12 no references, just homeworkarrow_forwardWhat are the correct pairings of developing and embryonic structures in the gastrulation of chickens? a. Epiblast- ectoderm c. Primary hypoblast-endoderm Read the following statements CAREFULLY: I. II. III. IV. b. Secondary hypoblast - endoderm d. Migrating cells - mesoderm The germ band needs to retract for fruit fly segments to develop properly. The formation of the sea urchin archenteron is made possible by epithelial cells that underwent epithelial-to-mesenchymal transition. Frog gastrulation involves the epiboly of endoderm cells. Chicken endoderm and mesoderm is formed through the migration of cells through both the anterior and posterior end of the primitive streak. a. All choices are true b. I & Il are true but IV is false d. IV is sometimes true c. Ill is falsearrow_forwardWhat happens to the embryo after week 8? Select one: a. All organ formation has completed, so the fetus begins to grow in size through mitosis. b. Umbilical cord and placenta begins to form. c. All other organs such as kidneys, bladder, liver, lungs, and spleen begin to form. d. Tissue and organ differentiation from the endoderm and mesoderm finalize at the end of the second trimester.arrow_forward
- In humans, the development of fertilised egg takes place in the: (a) ovary (b) testis (c) oviduct (d) uterusarrow_forwardWhy does external fertilization lead to an increase of genetic variation?arrow_forwardThe main function of the acrosome reaction is to (a) activate the egg (b) improve sperm motility (c) prevent interspecific fertilization (d) facilitate penetration of the egg coverings by the sperm (e) cause fusion of the sperm and egg pronucleiarrow_forward
- Describe the biological basis for the 1 : 1 ratio of malesand females at conception in mammals.arrow_forwardIf an egg cell were treated with EDTA, a chemical that bindscalcium and magnesium ions,(A) the acrosomal reaction would be blocked.(B) the fusion of sperm and egg nuclei would be blocked.(C) the fast block to polyspermy would not occur.(D) the fertilization envelope would not form.arrow_forwardWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
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