Concept explainers
A bird maintains a relatively stable internal body temperature on a cold day. This is an example of
- adaptation
- evolution
metabolism - homeostasis.
- development.
Introduction:
Life is a dynamic process and the surroundings in which organisms live is not constant, it keeps on changing. Thus, to survive in the changing environment, some organisms such as mammals and birds regulate their cells and bodies to maintain relatively stable internal conditions. The ability of such organisms to maintain stable internal conditions is called homeostasis. For example, most mammals and birds maintain relatively stable body temperature in spite of changing environmental temperatures.
Answer to Problem 1TY
The correct answer is option (d) homeostasis.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) homeostasis. It the ability of an organism to maintain the stable internal environment of the body by self-regulatory processes within limits that enable organisms to survive. For example, birds maintain a relatively stable body temperature on a cold day. So, the correct answer is option (d).
Explanation for incorrect answer:
Option (a) adaptations. Adaptation is the changing in behavior to make it suitable for a new purpose. So, this is an incorrect answer.
Option (b) evolution. It is the change in the features of a species over many generations and relies on the process of natural selection. So, this is an incorrect answer.
Option (c) metabolism. Sum of all the chemical reactions in the organism is called metabolism. So, this is an incorrect answer.
Option (e) development. It is a sequence of changes in any level of an organism which results in organisms with a defined set of characteristics. So, this is an incorrect answer.
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Chapter 1 Solutions
Principles of Biology
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