Unit 2: Mystery 4 Quiz

1. Where did dogs come from?

• Dogs came from wolves.
• Dogs came first, then came the wolves.
• Dogs came from dinosaurs.

2. Why are there so many different kinds of dogs?

• Humans went into a computer and created all different kinds of dogs.
• Over time, humans have chooses specific traits and bred those dogs.
• Because it would be boring if all dogs were the same kind of dog.

3. How did dairy cows become so good at producing milk?

• Cows produce more milk now because they practice really hard.
• Cows produce more milk now because people bred the cows that produced more milk.
• Cows have learned to eat a lot of cheese to help them produce more milk.

4. Why have humans bred different kinds of cows (dairy, beef, working)?

• Humans have not bred different kinds of cows, cows have naturally evolved to be different kinds over time.
• Humans have bred different types of cows because they don't want other people to have the same breed of cow.
• Humans have bred different types of cows for different needs (milk, food, help pull heavy things)

5. Describes a type of living thing that once lived on Earth, but no longer exists.

• extinct
• generation
• species
• variation
• inherited trait

6. Living things born and living at around the same time.

• generation
• species
• variation
• inherited trait
• artificial selection

7. The different versions of a trait, such as the size of a dog.

• generation
• species
• variation
• inherited trait
• artificial selection

8. One specific kind of living thing that has similar characteristics and traits.

• generation
• species
• variation
• inherited trait
• artificial selection

9. The process of humans choosing certain traits of living things so that they are passed to the offspring.

• generation
• species
• variation
• inherited trait
• artificial selection

10. A trait of a living thing that comes from its parents.

• generation
• species
• variation
• inherited trait
• artificial selection