Variations - natural selection - adaptation

What is an adaptation?

• An inherited trait that helps a species survive

• A physical characteristic of an organism

• A behavior exhibited by an organism

• An internal body system that affects biochemistry

What are variations in a species?

• Harmful mutations in a species

• Traits that help organisms survive

• Differences in inherited traits among individual members of a species

• Physical traits that resemble other species

Besides tortoises, what other animals did Darwin become curious about?

• Dolphins

• Birds

• Monkeys

• Fish

What type of tortoises lived on islands with tall cacti?

• Tortoises did not have a specific food source.

• All tortoises lived on islands with tall cacti.

• Tortoises with short necks and shells close to the neck.

• Tortoises with long necks and a large space between the shell and neck.

How did variations in tortoises occur?

• They were the result of genetic engineering

• They were inherited from their parents

• They were caused by mutations

• They were randomly assigned by nature

What did Darwin recognize about the relationship between each species and their food source?

• Each species ate the same food.

• Each species had a specific food source depending on the island.

• He did not pay attention to their food source

• There was no relationship.

What did Darwin notice about the appearance of the tortoises on each island?

• They all looked the same.

• They looked different depending on their age.

• They looked different depending on the island environment.

• He did not pay attention to their appearance.

What is an example of a structural adaptation?

• Hunting at night

• Moving in herds

• The length of a tortoise's neck

• A drop in body temperature during hibernation

Answer the following question

• A

• B

• C

• D

answer the following question

• A

• B

• C

• D