Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 32.2, Problem 2R
Summary Introduction
To review:
The ways in which the echinoderms obtain food using their tube feet. The comparison between this feeding mechanism with that of the hemichordates.
Introduction:
The echinoderms and the hemichordates fall under the deuterostome class. The former possesses a radial symmetry, while the latter possesses a bilateral symmetry. The body symmetry of these organisms enables two modes of feeding mechanisms.
The echinoderms possess water canals systems, which extend into tube feet outside their body. The tube feet functions as locomotor organs and at the same time, also serves the gaseous exchange. Along with the water, the food and gases diffuse into the water canal system through the tube feet.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Contrast the skeleton of an echinoderm with that of an arthropod.
Describe the endoskeleton and other adaptations seen in echinoderms.
Compare and contrast the symmetry and body shape of the different classes of echinoderms.
Chapter 32 Solutions
Life: The Science of 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
- Echinoderms in their larval state have ______. a. triangular symmetry b. radial symmetry c. hexagonal symmetry d. bilateral symmetryarrow_forwardSessile adult tunicates lose the notochord; what does this suggest about one function of this structure?arrow_forwardExplain why frogs are restricted to a moist environment.arrow_forward
- Which of the following structures is not a component of the watervascular system of an echinoderm? a. Ossicles b. Ampullae c. Radial canals d. Madreporitesarrow_forwardDescribe the acrosomal reaction in an echinoderm like the purple sea urchin, Strongylocentrotus purpuratus.arrow_forwardHow are the echinoderms significant to the marine environment? Relate at least three of their anatomical features that made them fitting for these purpose.arrow_forward
- Explain how all echinoderms show five-sided radial symmetry when they look so different. How does a tube foot work? Explain using words and drawings. Most of the echinoderms have hard parts and spines for defense, but the sea cucumbers do not. How do sea cucumbers protect themselves from predators?arrow_forwardEchinoderms are characterized by their spiny skin. What are these spines made of, and from what do they arise?arrow_forwardMollusks exhibit a variety of feeding methods. List at least four and discuss adaptations and examples for each type.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College