Evolution by Natural Selection Adaptations Quiz 1 Who

Evolution by Natural Selection Adaptations

Quiz 1. Who is the father of evolution? Charles Darwin 2. Provide 3 examples of evidence for evolution. • Fossils • Comparative Anatomy • Comparative Embryology • Geographic Distribution

Quiz 3. What does Fitness mean? Ability of an organism to survive and reproduce in its specific environment The more “fit” an organism is the more likely it is to survive.

Life changes over time by the process of natural selection Darwin’s Theory

How does evolution occur? • Struggle for Existence – High birth rates and shortages of necessities which leads to competition • Survival of the Fittest – During this competition someone is going to win and someone is going to lose Those that are best fit for the fight (Environment) are going to win. Ex. The gazelle that runs fastest will not be the one eaten.

All One Species – Rat Snake

What makes an organism better fit then others in the population? ADAPTATIONS • What is an adaptation? An adaptation is an inherited trait that makes an organism better able to survive in a certain environment • There are three types of adaptations 1. Structural adaptations 2. Physiological adaptations 3. Behavioral adaptations

Structural Adaptations 1. Structural adaptations – structural traits that make an organism better able to live in a certain environment – Example: the shape and size of a bird’s beak

More Structural Adaptations… • Mimicry- a harmless species resembles a harmful one, predators learn to avoid both species

More Structural Adaptations… • Camouflage- species features blend in with the environment

Types of Adaptations 2. Physiological adaptations – adaptations that involve the metabolic processes of an organism – Example: venom in snakes

More Physiological Adaptations Octopus Ink

Types of Adaptations 3. Behavioral Adaptations – adaptations in responses to the environment – Example: nest building in birds

Behavioral Adaptations Hibernation in the winter

What type of adaptation is this?

What type of adaptation is this?

What type of adaptation is this?

What type of adaptation is this?

What type of adaptation is this?

What type of adaptation is this? • Migration of Birds

Adaptation Assignment • Create a Adaptations Foldable Requirements: There are three section, one for each type of adaptation. For each section provide a definition, a well explained example, and some type of sketch or drawing.