CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Textbook Question
Chapter 18, Problem 2CC
Identify the pattern of embryonic development shown in each drawing below and name the phylum (or phyla) that exhibit this pattern.
a. 
b. 
c. 
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Students have asked these similar questions
Study the sea star development slides, including early and late stages and identify the following
stages and structures: zygote, two cell stage, morula (stage), blastula (stage), blastocoel
(cavity), archenteron (cavity), ectoderm (layer), endoderm (layer), gastrula (stage).
**See Table 52.1, Section 52.3 & 52.4 in textbook **
Why is it useful to study the development of sea stars (Echinodermata) when studying
human development? What do the two have in common?
Using the space below please address the items below as they relate to human embryology;
a) discuss when the germ layers of human development begin to form, explain how each originates, explain what each will differentiate into, and what happens to each layer immediately after formation
b) distinguish the developmental differences between a 20 day old embryo and a 4wk embryo in humans.
Give the name of the structure that the phrase describes. The structure that is formed after the morula stage
Chapter 18 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 18 - Prob. 1CCCh. 18 - Identify the pattern of embryonic development...Ch. 18 - Bilateral symmetry in animals is best correlated...Ch. 18 - Jon found an organism in a pond, and he thinks its...Ch. 18 - Which of the following groupings includes the...Ch. 18 - Which of the following animal groups does not have...Ch. 18 - Prob. 7TYKCh. 18 - Prob. 8TYKCh. 18 - Prob. 9TYKCh. 18 - Prob. 10TYK
Ch. 18 - The simplest animal group a. annelids b. nematodes...Ch. 18 - Prob. 12TYKCh. 18 - Largest phylum of all a. annelids b. nematodes c....Ch. 18 - Closest relatives of chordates a. annelids b....Ch. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - Prob. 17TYKCh. 18 - Name two phyla of animals that are radially...Ch. 18 - One of the key characteristics of arthropods is...Ch. 18 - A marine biologist has dredged up an unknown...Ch. 18 - SCIENTIFIC THINKING In one of the experiments...
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- Explain the development of human embryo with diagrams.arrow_forwardAt which stage of embryonic development does the embryo have a blastopore? Group of answer choices A.Blastula B. Zygote C. Morula D. Gastrulaarrow_forwardUse the diagram to answer the following question. The diagram shows different stages of embryo development for eight different organisms. image Which claim is BEST supported by the evidence provided? A. The calf and the salamander have the most similar DNA sequences. B. The pig and the tortoise have the most similar DNA sequences. C. The chick and the tortoise have the most similar DNA sequences. D. The fish and the chick have the most similar DNA sequences.arrow_forward
- C. Evidence from embryology Embryology is the study of the development of an organism from an embryo to its adult form. Common structures are shared in the embryo stage and disappear by the time the embryo reaches the juvenile or adult form. Observe the illustration below of the different stages of embryo from different organisms and hypothesize which embryo is from each of the organisms. Write the letter in the following table under the "Embryo category". Then describe how the embryos changed for each of these organisms from their earliest to latest stages. 59 9383 Early stage Late stagearrow_forwardExplain every stage of the Diagram belowarrow_forwardDescribe the step-by-step fertilization process in an amphibian. Include in the discussion the structures involved in the process.arrow_forward
- The development of a zygote into a baby involves pre-embryonic development for the first 2 weeks, followed by embryonic development for the next 6 weeks, and finally fetal development until the baby is born. When is the developing baby considered a fetus? Select one: a. When all major organ systems have formed b. After the neural tube forms c. Once gastrulation is complete d. When most major organ systems have formed; the neural system forms during the fetal stagearrow_forwardprofile-image For which organism and life stage would you expect to see the most rapid senescence? A.) A long-lived organism that has not yet reached sexual maturity. B.) A semelparous organism with parental care that has completed reproduction. C.) An iteroparous organism that has completed its first breeding season. D.) A semelparous organism without parental care that has completed reproduction.arrow_forwardExplain the following terms: ectoderm, endoderm, mesoderm and stem.arrow_forward
- A human is a complex organism that develops from a zygote. Briefly explain some of the the steps in this development process in the form of a paragraph. In your answer, be sure to: 1) explain how a zygote formed, 2) compare the genetic content of the zygote to the body cells of the parents, 3) identify the structure in which embryonic/fetal development usually occurs within, and 4) identify the structure that forms, which provides nourishment and waste removal to/from the developing baby.arrow_forwardWhat is the source of energy for the embryo immediately following the fertilization? Select one: a. Mitochondria of the sperm b. Cytoplasm of the eggarrow_forwardWhich of the following statements about gastrulation is correct? A. During gastrulation, the contents of cell nuclei begin to vary so that they can start to perform different fucntions. B. During gastrulation, cells differentiate so that they can start to perform different functions. C. The formation of the endoderm, mesoderm, and ectoderm occurs after gastrulation. D. The formation of the endoderm, mesoderm, and ectoderm occurs before gastrulation.arrow_forward
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Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY