Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 31, Problem 9TYK
Summary Introduction
Introduction:
Ecdysozoa is a group of animals that includes arthropods, nematode, and other small phyla. The group is supported by morphological characters and the animals growing by ecdysis. The animals in this group have skin or an exoskeleton covering their body.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Segmentation, first seen in annelids, allows evolutionary advantages bya. allowing more fluid movement for less energy expense.b. specialization of segments to carry out different functions.c. allowing coelom development.d. concentrating sensory and nervous tissues and organs in the direction of motion.
What is the advantage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply.
A)The annelid may still survive if one segment is damaged.
B)Segments can be specialized.
C)The importance of segmentation is unclear.
D)Vital structures are repeated in each segment.
E)Locomotion is more efficient.
Which of the following statements about bilaterian animals is false?
A. Many bilaterians are invertebrates but some are not.
B. All bilaterians are triploblastic (have three germ layers).
C. All bilaterians have bilateral symmetry.
D. Most bilaterians have tissues but some do not.
Chapter 31 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 31.1 -
1. What characteristics distinguish animals from...Ch. 31.1 - How does the ability of animals to move through...Ch. 31.2 - What is a tissue, and what three primary tissue...Ch. 31.2 - What type of body symmetry do humans have?Ch. 31.2 - What is the functional significance of the coelom?Ch. 31.2 - Prob. 4SBCh. 31.3 - Which major groupings of animals defined on the...Ch. 31.3 - Prob. 2SBCh. 31.4 - Prob. 1SBCh. 31.4 - Prob. 2SB
Ch. 31.5 - Prob. 1SBCh. 31.5 - Prob. 2SBCh. 31.5 - What do ctenophores eat, and how do they collect...Ch. 31.6 - Prob. 1SBCh. 31.6 - Prob. 2SBCh. 31.6 - Prob. 3SBCh. 31.6 - Prob. 4SBCh. 31.7 - Prob. 1SBCh. 31.7 - If an arthropods rigid exoskeleton cannot be...Ch. 31.7 - Prob. 3SBCh. 31.7 - Prob. 4SBCh. 31 - Prob. 1TYKCh. 31 - Prob. 2TYKCh. 31 - Protostomes and deuterostomes typically differ in:...Ch. 31 - Prob. 4TYKCh. 31 - Which organ system is absent in flatworms (phylum...Ch. 31 - Prob. 6TYKCh. 31 - Prob. 7TYKCh. 31 - Which body region of an insect bears the walking...Ch. 31 - Prob. 9TYKCh. 31 - What is the major morphological innovation seen in...Ch. 31 - Prob. 11TYKCh. 31 - Prob. 12TYKCh. 31 - Discuss Concepts What are the relative advantages...Ch. 31 - Prob. 14TYKCh. 31 - Prob. 15TYKCh. 31 - Prob. 16TYKCh. 31 - Prob. 1ITD
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
- Which of the following is not a member of the phylum Chordata? a. Cephalochordata b. Echinodermata c. Urochordata d. Vertebrataarrow_forwardYou find a worm and discover that it has no coelom, no nephridia and a mouth but no anus. What must be true of this animal? A. it is a xenacoelomorph B. it is s pseudocoelomate C. it is hermaphroditic D. it exhibits bilateral symmetry E. A, C and Darrow_forwardFlatworms can reach a maximum size of around 40cm. Whilst this is big for a worm, there are certainly larger animals on earth. What might it be that restricts the flatworms body size? A. They have an exoskeleton that restricts their growth. B. They do not have a circulatory system. C. They are exothermic animals that have limited energy for growth. D. They are acoelomates and so the growth of their internal organs is restricted by growth of the outer body wall.arrow_forward
- You read a research article presentsing new phylogenetic data demonstrating that species that contain a pseudocoelom are not closely related to one another. This suggests that: A. evolution of the pseudocoelom occurred more than once. B. the pseudocoelom evolved before the coelom. C. pseudocoelomates are more closely related to acoelomates than one another. D. pseudocoelomates are more closely related to coelomates than one another.arrow_forwardWhile studying the embryonic development of an organism, you determine that the blastopore of the developing gastrula has developed into a mouth. Based on the Animalia tree discussed in class, which one of the following phyla could this NOT be? A. Chordata B. Mollusca C. Porifera D. Annelida E. Arthropodaarrow_forwardVertebrates and tunicates share(A) jaws adapted for feeding.(B) a high degree of cephalization.(C) an endoskeleton that includes a skull.(D) a notochord and a dorsal, hollow nerve cordarrow_forward
- What is a key characteristic of all arthropods? a. Six legs c. Hydrostatic skeleton b. Pseudocoelom d. Exoskeletonarrow_forwardWhich of the following is NOT a characteristic of annelids? A.they have a closed circulatory system B.they reproduce through sexual reproduction C.there are both male and female earthworms D.they are able to sense vibrations in the groundarrow_forwardA marine biologist catches a species of fish she has never seen before. Upon examination, she determines that the species has a predominantly cartilaginous skeleton and a swim bladder. If its pectoral fins are not fused with its head, to which category of fish does the specimen belong? a. Rays b. Osteichthyes c. Sharks d. Hagfisharrow_forward
- Arthropods are the first phyla to possess: A)a brain B)an exoskeleton C)a complete digestive system D) an endoskeleton E) gillsarrow_forwardWhich of the following applies to a squid? a. Cephalization c. Complete digestive tract b. True coelom d. All of these are correct.arrow_forwardSelect all of the following that are true about cephalopods. A)They may be very large and can weigh over 1000 pounds. B)They are very intelligent and are capable of learning by observation. C)They are exclusively herbivorous. D)They have a closed circulatory system E)They lack a shell.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
Phylogeny and the Tree of Life; Author: Professor Dave Explains;https://www.youtube.com/watch?v=KLMn4XwS8Tw;License: Standard YouTube License, CC-BY