Concept explainers
Introduction:
Behavior is a term that describes what an animal does. It is a way through which an animal responds to environmental stimulus with the help of signals like visual, odor, or sound associated with mating, avoiding predators or to search food. Behavior helps an animal to survive and reproduce by monitoring social environment, making decisions, and thinking. Ethology is the study of animal behavior.

Answer to Problem 1U
Correct answer:
Ethologists suggested that the behavior in animals is controlled by the nervous system through an innate releasing mechanism which is a neural circuit that triggers the motor programs called fixed action patterns and is involved in the interpretation of key stimulus that triggered the action. They generalized that key stimulus is the environmental signal that starts the neural circuit which causes behavior. Innate releasing mechanisms are those sensory parts in the body that detect the signal and muscles controlled by neural circuits to generate a fixed action pattern. Therefore option b. is the correct answer.
Explanation of Solution
Reason for the correct statement:
A key stimulus is the environmental signal that starts the neural circuit which causes behavior. The innate releasing mechanism includes sensory parts in the body that detect the signal and muscles controlled by neural circuits to generate a fixed action pattern. Thus, key stimulus, innate releasing mechanism and fixed action pattern are the innate components of behavior.
Option b. is given as “are components of behaviors that are innate”.
As, “a key stimulus, innate releasing mechanism, and fixed action pattern are components of behaviors that are innate”, is the right answer.
Hence option b. is correct.
Reasons for the incorrect statements:
Option a. is given as “are mechanisms associated with behaviors that are learned”.
A key stimulus, innate releasing mechanism and fixed action pattern are the innate components of behavior and cannot be learned. So, it is a wrong answer.
Option c. is given as “involve behaviors that cannot be explained in terms of ultimate causation”.
A key stimulus, innate releasing mechanism and fixed action pattern are the innate components of behavior that can be explained in term of ultimate causation through the adaptive value of the behavior. Different adaptive behavior helps an animal to survive. So, it is a wrong answer.
Option d. is given as “involve behaviors that are not subject to natural selection”.
Innate behavior that helps an organism to survive is subjected to natural selection that helps an animal in their evolution. So, it is a wrong answer.
Hence options a., c., and d. are incorrect.
The behavior in animals is controlled by internal factors. A nervous system on receiving a key stimulus or signals regulates behavior through an innate releasing mechanism that triggers the motor programs called fixed action pattern.
Want to see more full solutions like this?
Chapter 54 Solutions
BIO 1406/07 W/CONNECT/LM NEW >IC<
- Dental assistantarrow_forwardO Macmillan Learning Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly The pKa values for the peptide's side chains, terminal amino groups, and carboxyl groups are provided in the table. Amino acid Amino pKa Carboxyl pKa Side-chain pKa glutamate 9.60 2.34 histidine 9.17 1.82 4.25 6.00 tryptophan 9.39 2.38 serine 9.15 2.21 glycine 9.60 2.34 leucine 9.60 2.36 arginine 9.04 2.17 12.48 proline 10.96 1.99 Calculate the net charge of the molecule at pH 3. net charge at pH 3: Calculate the net charge of the molecule at pH 8. net charge at pH 8: Calculate the net charge of the molecule at pH 11. net charge at pH 11: Estimate the isoelectric point (pl) for this peptide. pl:arrow_forwardBiology Questionarrow_forward
- This entire structure (Pinus pollen cone) using lifecycle terminology is called what?arrow_forwardThis entire structure using lifecycle terminology is called what? megastrobilus microstrobilus megasporophyll microsporophyll microsporangium megasporangium none of thesearrow_forwardHow much protein should Sarah add to her diet if she gets pregnant? Sarah's protein requirements during pregnancy would be higher. See Hint B2. During calculations, use numbers rounded to the first decimal place. In your answer, round the number of grams to the nearest whole number. _______ g ?arrow_forward
- C MasteringHealth MasteringNu X session.healthandnutrition-mastering.pearson.com/myct/itemView?assignment ProblemID=17396422&attemptNo=1&offset=prevarrow_forwardMost people, even those who exercise regularly at low to average intensity (1 hour at the gym or a 2- to 3-mile walk several times per week), do not need an increased protein intake. What would be the protein needs of a man named Josh who exercises moderately and is the same age and size as Wayne? Josh is 5 ft, 8 in tall and weighs 183 lb. Round the number of grams to the nearest whole number. During calculations, use numbers rounded to the first decimal place. Because protein requirement is a range, please enter two numbers: lower and upper range values, respectively. Separate the lower and upper range values, in that order, by a comma. ___, ___ g ?arrow_forwardC MasteringHealth MasteringNu X session.healthandnutrition-mastering.pearson.com/myct/itemView?assignment ProblemID=17396422&attemptNo=1&offset=prevarrow_forwardIf left untreated, most HIV-infected individuals will develop AIDS. Current treatments are focused on highlyactive antiretroviral therapy (HAART). HAART usually consists of an orally delivered drug cocktail containingtwo different reverse transcriptase inhibitors and one other drug, such as a protease inhibitor. Question: Develop a pharmacokinetic model of HAART treatment. Consider all 3 drugs. Make sure to include adiagram that illustrates your thinking, state all assumptions, and define your variables. Whatparameters would you need to know to find the concentration of drug in the plasma? In the T cells?(You do not need to write out or solve any equations.)arrow_forwardnot use ai pleseaarrow_forward(A) 25 20 20 15 NPP (Mg C/ha/yr) 10 10 5 0 0 2,000 4,000 6,000 ECOLOGY 4e, Figure 20.11 (Part 1) 2017 Sinauer Associates, Inc. Average annual precipitation (mm) 8,000arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_iosRecommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningComprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning