Introductory Biology

36.2 Types of Behavior

Behaviors improve an animals ability to survive and reproduce. Foraging behavior: is when the animals locate, obtain, and consume food. It involves a trade-off between the food’s energy content and its availability. Specialists feed very efficiently (on a single type of food). Generalists feed less efficiently (on variety of food). Predators food comes in different sizes. **Optimal foraging: animals … Continue reading

Introductory Biology

36.1 Evolution of Behavior (Part 2)

Learning: the development of behaviors by experience. Learning can change the expression of innate behavior and the expression of behavior that are not innate. One kind of learning is habituation = animals learn to ignore a frequent, harmless stimulus. Example: Most birds stay away from gardens with scarecrows at first. But if the position of the scarecrow does not … Continue reading

Introductory Biology

13.3 Examples of Evolution

Variation is found in every sexually reproducing population. The environment is an obstacle to an successful reproduction but individuals often produce more offsprings than their environment can support. Individuals who are suited to the environment tend to leave more offsprings than the individuals that are less suited to the environment. **Evolution is the change in the … Continue reading