EBK BIOLOGY: CONCEPTS AND APPLICATIONS
EBK BIOLOGY: CONCEPTS AND APPLICATIONS
9th Edition
ISBN: 8220100477805
Author: STARR
Publisher: CENGAGE L
bartleby

Concept explainers

Question
Book Icon
Chapter 44, Problem 1SQ
Summary Introduction

Introduction:

“Endangered species” become extinct in all or part of its range and threatened species are vulnerable to become endangered in the near future. Not all rare species are threatened or endangered. In the United States, endangered and threatened species are listed by the United States Fish and Wildlife Service (USFWS).

Expert Solution & Answer
Check Mark

Answer to Problem 1SQ

Correct answer: An endangered species has population level so low it is at great risk of extinction in the near future. Therefore option b. is correct.

Explanation of Solution

Reasons for the correct statement:

Option b. is given as “endangered.”

ESA describes an "endangered species" as a species that is in the risk of extinction throughout all or a particular area of its geographic range. Therefore option b. is correct.

Reasons for incorrect statements:

Option a. is given as “endemic.”

Endemic species are organisms that are restricted to one geographic region. For example, lemurs are endemic and restricted to Madagascar. However endemic species are not at great risk of extinction. Therefore option a. is not correct.

Option c. is given as “threatened.”

The Endangered Species Act (ESA) describes a threatened species as a species that is vulnerable to become an “endangered species.” However threatened species are not at great risk of extinction. Therefore option c. is not correct.

Option d. is given as “Indicator.”

An indicator species is a species that represents the overall condition of an environment. For example, Tubifex tubifex is a worm that lives in the mire of streams and lakes. This worm represents overall condition environment such as water quality, low-oxygen levels or heavy metal contamination. However, indicator species are not at great risk of extinction. Therefore option d. is not correct.

Hence, option a., b., and d. are incorrect.

Conclusion

Endangered species has population levels so low it is at great risk of extinction in the near future.

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
8. Aerobic respiration of a 5 mM solution of tripeptide that is composed of the following three amino acids; alanine, leucine and isoleucine. Alanine breaks down to pyruvate, leucine breaks down to Acetyl-CoA and isoleucine breaks down to succinyl-CoA. Alanine NADH FADH2 OP ATP SLP ATP Total ATP Leucine Isoleucine Totals Show your work using dimensional analysis here: 4
9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure below. Use the information below to determine how much ATP will be produced from the glycerol part of the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your total number of ATP produced per lipid. Assume no other carbon source is available. fatty acids glycerol 18 carbons 12 carbons 0=
influences of environment on the phenotype.
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 (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
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 Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning