Biology
Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 34, Problem 1TY

Which of the following is not a defining characteristic of vertebrates?

  1. a. cranium
  2. b. hinged jaw
  3. c. vertebral column
  4. d. endoskeleton
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction: The vertebrates comprise of animals that have vertebral column in their body. The dorsal solid notochord changes into vertebral column where the vertebrae are the small bones connected together by the inter-vertebral disks. The vertebrae enable animals to travel large distances, and provides both strength and flexibility.

Answer to Problem 1TY

Correct answer: Hinged jaw is not a defining characteristic of the vertebrates. Hence, the correct answer is option b.

Explanation of Solution

Reason for correct answer:

The defining characteristic of any group should be present in most of the members of that group and the group can be identified on the basis of that character. The hinged jaw is the characteristic of coelacanths where hinged jaw helps to open their mouth wide open. This feature is not present in most of the vertebrates, hence it is not a defining characteristic of the vertebrates.

Option b is given as “hinged jaw”.

The presence of hinged jaw is not a defining characterstic of the vertebrates. Hence, the correct answer is option b.

Reasons for incorrect answer:

Option a. is given as, “cranium”.

The cranium is the cage like structure which enclose brain inside it. It is present in most of the vertebrate species, therefore cranium is also one of the defining characteristics of vertebrates. Hence, option a. is incorrect.

Option c. is given as, “vertebral column”.

The group has been named due to the presence of the vertebral column. It is also one of the basis of the classification in this group, therefore vertebral column is the one of the defining characteristic of vertebrates. Hence, option c. is incorrect.

Option d is given as, “endoskeleton”.

The endoskeleton is present in all the species of vertebrates and it is unique to vertebrate. It is a defining characteristic of vertebrates. Hence, option d. is incorrect.

Hence, the options a., c., and d are incorrect.

Conclusion

The defining characteristic of the vertebrates does not comprise of hinged jaws.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
In order to establish the expiration date of perishable food, growth curve data must be collected. Once the microbial load is so high that it poses a hazard to human health, the food item is no longer considered safe (expired). Generally a load of x50,000 bacteria/gram is considered unsafe. Your task is to determine the microbial growth curves for MicroYo, a new brand of yogurt. The growth is determined by sampling the yogurt and growing the bacterial isolates in broth culture which is then serially diluted by a total of x10,000 and inoculated onto standard petri plates of nutrient agar. The following colony counts are measured: Time (days) MicroYo colony count# 1 1 4 1 12 2 16 20 4 7 What day should you recommend expiring the yogurt (the last possible date before the microbial load is unsafe). 12 4 20 16
9. Chicken combs in chickens is an example where you see interactions between genes. See potential genotypes and phenotypes below. Which genotype, when mated to a rose comb chicken, will produce progeny that are 50% walnut comb and 50% pea comb? walnut (RRPP) walnut (RrPP) pea (rrPP) walnut (RRPP) walnut (RrPp) pea (rrPp) rose rose single (RRPP) (Rrpp) (rrpp)
Describe a compound light microscope and its importance in microbiology (2) examples of at least two microbes viewed under a compound light microscope and their general characteristics (note: the microbes you choose do not need to be the ones outlined in the above tutorial video) and (3) at least one source you used for the information included in your infographic.
Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
An Illustrated Guide To Vet Med Term
Biology
ISBN:9781305465763
Author:ROMICH
Publisher:Cengage
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
From Sea to Changing Sea | Early Life in the Oceans || Radcliffe Institute; Author: Harvard University;https://www.youtube.com/watch?v=Ac0TmDf5Feo;License: Standard youtube license