UNIT 3- CHAPTER 7 -LESSON 2 ADAPTATION IN PIECES

Question 1:

What is natural selection?

• a) A process that helps organisms survive in their environment

• b)A process that helps organisms become extinct

• c)A process that creates new species

Question 2:

Which of the following is true about organisms with variations that aid in survival?

• a)They live shorter lives

• b)They reproduce less

• c) They live longer,compete better,and reproduce more

Question 3:

What happens to variations that help an organism survive or compete better?

• a)They disappear

• b)They become less important over time

• c) They allow the organism to live longer and have more offspring with the same variation

Question 4:

What happens to the offspring that inherit a beneficial variation?

• a) They have a lower chance of survival

• b)They have a higher chance of survival

• c) They have the same chance of survival as their parents

1. What is homeostasis?

• a)The ability of an organism to maintain its external environment

• b) The ability of an organism to keep its internal conditions within certain limits

• c) The ability of an organism to adapt to changes in its environment

2. Sweating on a hot day is an example of:

• a)An adaptation to maintain body temperature

• b)A response to predators

• c)A way to conserve water

3. All species have adaptations to help them survive:

• a) Extreme changes in their environment

• b)Extreme heat conditions

• c) Extremely cold conditions

4. Camouflage is an adaptation that enables a species to:

• a) Stand out in its environment

• b)Blend in with its environment

• c)Fly away from danger

5. Mimicry is an adaptation where one species looks like another species.

• False

• True

6. Which of the following examples is not an adaptation to protect against predators?

• a) Sharp quills protecting porcupines

• b) Camouflage to blend in with the surroundings

• c) Bright colors to attract predators