1. Why is a polar bear's thick white fur considered an adaptive trait in the Arctic but would NOT be adaptive in a tropical rainforest?
- A. The fur's usefulness depends on the environment.
- B. The fur would change color to brown in the rainforest.
- C. The polar bear would not like the hot weather.
- D. The white fur would get dirty too easily in the rainforest mud.
2. Which of these is NOT an example of how an adaptive trait might help an organism?
- A. Helping it find food.
- B. Helping it choose a new home.
- C. Helping it hide from predators.
- D. Helping it build a home.
3. What is the best definition of an adaptive trait?
- A. Any feature an organism has, like its color or size.
- B. A behavior that an organism learns to do during its lifetime.
- C. A special feature or behavior that helps an organism survive and have babies in its environment.
- D. A trait that makes an organism look interesting to other animals.
4. A cactus living in a dry desert has a thick, waxy skin. What is the primary advantage of this adaptive trait?
- A. It makes the cactus look shiny to attract insects.
- B. It protects the cactus from being eaten by large animals.
- C. It prevents water from evaporating from the cactus, helping it survive with little rain.
- D. It helps the cactus absorb more sunlight for energy.
5. What is the most likely result for an organism that possesses many adaptive traits well-suited to its environment?
- A. It will have a greater chance of staying alive and having offspring.
- B. It will need to move to a new environment to find challenges.
- C. It will stop evolving because it is already perfect.
- D. It will have fewer babies to save its energy.
6. A population of green grasshoppers lives in a lush, green field. If a long drought turns the field brown, which individual grasshoppers are most likely to survive and reproduce?
- A. The grasshoppers that can jump the highest to escape.
- B. The largest and strongest grasshoppers in the population.
- C. Any grasshoppers that happen to have a brownish color, helping them blend in.
- D. The grasshoppers that are the best at finding the last remaining patches of water.
7. How does an individual organism having an adaptive trait, like camouflage, benefit future generations?
- A. The individual actively teaches the survival skill to its babies.
- B. The trait is passed on through genes when the organism successfully reproduces.
- C. The environment automatically changes to better suit the organism's traits.
- D. The organism's body changes during its life and it passes on those learned changes.
8. A polar bear lives in the snowy Arctic and has thick white fur. Why is this fur considered an adaptive trait?
- A. It helps the bear stay warm and blend in with the snow to hunt.
- B. It makes the bear look bigger and more intimidating to other polar bears.
- C. It allows the bear to swim faster in the cold ocean water.
- D. It helps the bear find berries and plants buried under the snow.
9. What is the primary reason an organism with helpful adaptive traits is more likely to reproduce?
- A. It lives long enough to have offspring.
- B. It is automatically more attractive to all mates.
- C. It always finds more food than other organisms.
- D. It can fight off all competitors successfully.
10. Imagine a forest where trees have very dark bark. Which type of moth living there has the best chance of passing its traits to the next generation?
- A. Moths with large wings to fly away quickly.
- B. Moths that are brightly colored.
- C. Moths with dark-colored wings.
- D. Moths that are active during the daytime.