Tennessee SPI Objective Analyze structural behavioral and physiological

Tennessee SPI Objective: Analyze structural, behavioral, and physiological adaptations to predict which populations are likely to survive in a particular environment. Essential Question(s) 1) What are three types of adaptations? 2) What are five examples of how organisms adapt? 3)What is natural selection and explain each step? 4) Explain bottlenecking and illustrate.

An adaptation is a characteristic that improves an individual’s ability to survive and reproduce in a particular environment. Can I list 3 types of adaptations?

Three types of adaptations that help organisms survive are structural, behavioral, and physiological. Structural adaptations – What an organism is; Shape and form of the body Behavioral adaptations – What an organism does. Physiological adaptations – Adaptatons that deal with the internal body makeup that aid in the functions to help in survival. Some examples of these adaptations are: Can I list 3 types of adaptations?

1. Obtaining Food Almost all organisms have adaptations to help them obtain food. Examples: Chameleon – long tongue Woodpecker – pointed beak Human – hands and fingers Can I list 3 types of adaptations?

2. Predator-Prey Many organisms have adaptations that serve as a defense against predators. Can I list 3 types of adaptations?

One common adaptation that helps predators and prey is called camouflage. An organism that is camouflaged is disguised so that it is hard to see even when the organism is in view. Can I list 3 types of adaptations?

3. Interactions Two species can acquire adaptations because of their interaction with one another. Interactions take place between organisms that live close together. Can I list 3 types of adaptations?

4. Hibernation/Estivation ■ A period of inactivity and decreased body temperature that some animals experience in the winter is hibernaton. ■ Many desert squirrels and mice experience a similar internal slowdown in the hottest part of the summer which is called estivation. Can I list 3 types of adaptations?

5. Migration To migrate is to travel from one place to another. Animals migrate to find food, water, or safe nesting grounds. Can I list 3 types of adaptations?

Natural selection The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do. There are four parts that make up natural selection. They include: Can I list 3 types of adaptations?

1. Overproduction more offspring are born than will live to become adults. Can I list 3 types of adaptations?

2. Genetic Variation Individuals in a population differ from one another. Some characteristics improve chances while others lower chances for survival. Can I list 3 types of adaptations?

3. Struggle to Survive Many individuals die from lack of resources. Others are killed by predators or cannot find mates to reproduce. The ones who find resources, survive! Can I list 3 types of adaptations?

4. Successful Reproduction This is the key to natural selection. The strong survive, while the weak die early or have few strong offspring. Can I list 3 types of adaptations?

Can I list 3 types of adaptations? Pg. 87 4 Phases of Natural Selection Phase 1 Phase 2 Phase 3 Phase 4

Genetic Variation In natural selection, individuals within the population must be different. Over time, the population will be made up of more individuals with characteristics that help them survive. Can I list 3 types of adaptations?

If a population decreases rapidly, the characteristics of the individuals are reduced. This is called a genetic bottleneck. Can I list 3 types of adaptations?

What is happening in this diagram? Can I list 3 types of adaptations? What type of organism would make it to this side?

Many characteristics may be lost entirely because the individuals with those characteristics died. As the population recovers, organisms are genetically similar causing genetic diseases to occur. Can I list 3 types of adaptations?