Evolution and Adaptation

Evolution and Adaptation

By Mr. Arch

Open Ended

Why do you think the Dinosaurs went extinct while other living things did not 65 millions years ago, even though they were all exposed to the same catastrophe?

It was their inability to Adapt which resulted in their Extinction.

What are the key principles and processes of natural selection and how do they contribute to the diversity and adaptation of species?

Essential Question

You will answer this at the end of the lesson.

Open Ended

What do you believe it means to adapt ? What benefit is there in adapting ?

What is adaptation?

- is the process by which an organism becomes better suited to its environment through changes in its physical structure, behavior, or physiology. These changes, called adaptations, help the organism survive, reproduce, and thrive in its specific habitat.

Adaptations can be:

• Physical

• Physiological

• Behavioral

Physiological Adaptation

• These are processes which takes place internally which protects the organisms from the changes that takes place in the environment

• Ex. A snake produces toxin to protect itself

• An opposum playing dead to detract predator

Physical Adaptations

• External features that organism develop to help them adjust to the environment

• Ex. Cacti having prickles that prevent loss of water

• Hard shells on crabs

Open Ended

Type an example of physical adaptation

Behavioral

• These are actions that animals take in response to change in environment

• Ex. Bears hibernating in winter

• Snake hissing

• Dog growling

• Plants losing leaves in winter

Open Ended

Type an example of Behavioral Adaptation

Multiple Choice

Which of the following is not a type of biological Adaptation?

• Behavioral

• Physiological

• Emotional

• Physical

Multiple Choice

Adaptations which allow organisms internal processes to adjust internally in a way that protects them

• Physical

• Biological

• Physiological

Multiple Choice

External body changes that enables organisms to adjust to environment

• Physical

• Physiological

• Behavioral

Multiple Choice

What type of adaptation is shown in picture ?

• Behavioral

• Physical

• Physiological

Open Ended

What term is used to describe an organism that change over Time as they adapt ?

Biological Evolution

How does evolution take place?

• Artificial Selection

• Natural Selection

Artificial selection

• Humans carefully select traits or characteristics that are passed on to offspring

Multiple Choice

Selection of desired traits in organisms by humans

• Natural Selection

• Artificial selection

• Survival of the fittest

• Random selection

Multiple Choice

The random selection of traits in organisms without human interference

• Natural selection

• Artificial Selection

• survival of the fittest

Natural Selection

• Natural selection can be defined as the process by which nature randomly select traits in a consistent, orderly which enables an organism to adapt to its environment

• Mutation takes place during Natural Selection

Mutation

• Occur when there is a change in the way the DNA is replicated

• can result in organisms that are slightly different.  

• Most have no effect on the organism, but they can be passed down to the next generation.

• Overtime mutations could result in an entirely different organism

Multiple Choice

Another word for adapt is

• Change

• Create

Multiple Choice

To adjust to a changing environment

• Mutation

• Adapt

Multiple Choice

What is the gradual change in species over time?

• Evolution

• Adaptation

• Natural Selection

Multiple Choice

Look at the picture. What would be an appropriate caption to explain evolution by natural selection?

• Genetic Variation

• Adaptation

• Natural Selection

• Traits are inherited

Multiple Choice

Look at the picture. What would be an appropriate caption to explain evolution by natural selection?

• Genetic Variation

• Adaptation

• Natural Selection

• Traits are inherited

Multiple Choice

Look at the picture. What would be an appropriate caption to explain evolution by natural selection?

• Genetic Variation

• Adaptation

• Natural Selection

• Traits are inherited

Multiple Choice

Look at the picture. What would be an appropriate caption to explain evolution by natural selection?

• Genetic Variation

• Adaptation

• Natural Selection

• Traits are inherited

What are the key principles and processes of natural selection and how do they contribute to the diversity and adaptation of species?

Essential Question

You will answer this at the end of the lesson.