Developmental Biology
11th Edition
ISBN: 9781605354705
Author: Scott F. Gilbert, Michael J. F. Barresi
Publisher: Sinauer Associates is an imprint of Oxford University Press
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 21, Problem 2DQ
Summary Introduction
To review:
The conditions under pluteus larva replicate by budding off parts of themselves.
Introduction:
A varied planktonic larval forms is exhibited by echinoderm generally includes sea urchins, sea stars and sea cucumbers, both feeding and non-feeding. The larval forms are result of evolutionary pressures that appear to shape larval morphology within the confines of opposing functional constraints, in particular on feeding ability versus stability in the water column.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
STUDY QUESTIONS
The table below presents the criteria to be used in comparing mitosis and meiosis. Provide
the missing information.
1.
CRITERIA
a. chromosome number of daughter cells
b. number of cell divisions
C. stages
d. presence of synapsis
e.
f.
presence of crossing over
cell type that undergoes division
g. number of daughter cells formed
h.
i.
DNA content of cells at start of division
DNA content of daughter cells
j. genetic consequences
MITOSIS
MEIOSIS
Need help on three multiple questions.
1.) How is the outcome of different from the outcome of mosis?
A.) The daughter cells produced in mitosis are genetically different from the parent cells, but have the same number of chromosomes, while these are genetically similar in case of meiosis and have fewer chromosomes.
B.) The daughter cells produced in mitosis ate genetically similar to the parent cells and have the same chromosomes , while these are genetically different in merosis and have half the number of chromosomes.
C.) The daughter cells produced in both cases are genetically similar to the parent cells, but in there are fewer chromosomes .
D.) The daughter cells produced in both cases are genetically different but in mitosis , there are fewwer chromosomes in daughter cells
2.) Pine trees and moss show alternation of generations in their life cycle. During the life cycle of pine and moss
A.) the sporophyte stage is dominant
B.) the gametophyte is diploid
C.) meiosis…
Can you please help me!
Chapter 21 Solutions
Developmental Biology
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
- QUESTIONS: ©A cell containing 20 chromosomes (diploid) at the beginning of meiosis would, at its completion, produce cells containing how many chromosomes? ©A cell containing 40 chromatids at the beginning of meiosis would, at its completion, producể cells containing how many chromosomes?arrow_forwardActivity 2 "Mark My Calendar" Part A-For no fertilization 1. Arrange the correct sequence of events in the menstrual cycle. 2. Write the number of event in the right place/dates where they occur. 3. Make sure that they are correctly written. See pictures belowarrow_forwardplease help asaparrow_forward
- During what process does the amnion envelop the embryo? embryonic folding gastrulation implantation organogenesisarrow_forward10 Activity 2 Answers Only Directions: Identify what phase of menstrual cycle is described in each number. 1. The lining of the uterus becomes thin after menstruation. An egg in the ovary continues to mature. Just before the mid-cycle, the mature egg moves to the surface of the ovary. 2. The lining of the uterus called endometrium becomes thicker in preparation for implantation of the fertilized egg. If fertilization does not take place, menstruation happens. The next cycle is then about to begin. 3. This occurs when fertilization does not take place. The uterine lining begins to break down and bleeding results. Menstrual fluid contains blood cells and mucus flow and lasts from 3 to 7 days. 4. The mature egg is released and travels to the fallopian tube and toward the uterus.arrow_forwardQuestions D and Earrow_forward
- 30- need help with following. please be specifiy about answerarrow_forwardActivity 2. Complete the questions below. 1. List four forms of asexual reproduction. a. Give a brief definition of each form listed. b. If the reproductive output of asexual reproduction is greater than sexual reproduction, why do most animals reproduce primarily sexually?arrow_forwardPlease help with the 4 questions!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Anatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax College
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Anatomy & Physiology
Biology
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:OpenStax College
Reproduction: Crash Course Zoology #9; Author: CrashCourse;https://www.youtube.com/watch?v=poLyJDVjKlM;License: Standard youtube license