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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Generally, living in a social group cost the individual in terms of ________.

  1. a. competition for food, other resources
  2. b. vulnerability to contagious diseases
  3. c. competition for mates
  4. d. all of the above

Summary Introduction

Concept introduction: Social behavior is the complex combination of the costs and benefits of living in groups, interactions, conflict between the sexes, and nepotism when they are surrounded by the relatives.  The diversity in social behavior helps in understanding the natural selection and evolution process.

Explanation

Reasons for the correct statement:

If group behavior has to evolve, the benefits of spending time in group must compensate their costs.

Option d. is given as “all of the above”. The most common cost of group living is increased competition. Individuals in groups compete for the resources, increased risk of predation, and parasitism. Dominant interaction and increased change of disease spreading will be more in group living. Hence, option d. is the correct answer.

Reasons for the incorrect statement:

Option a. is given as “competition for food, other resources”. Even though this is one of the drawbacks in group living; there are several other disadvantages in group living of social behavior...

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