Which of the Following Is a Part of the Second

question 70

Multiple Choice

Which of the following is a part of the second line of defense against microorganisms?

• A) keratin
• B) cilia
• C) gastric juice
• D) phagocytes

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Definitions:

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring, a core concept of evolutionary theory.

Genetic Evolution

The changes in allele frequencies within a population over time, due to mechanisms such as natural selection and genetic drift.

Behavioral Evolution

The study of how behavior changes over time in response to environmental pressures, driven by the process of natural selection.

Highly Stereotyped

describes behaviors, actions, or characteristics oversimplified and generalized across a group without individual differentiation.