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Twenty Questions

Twenty Questions . Subject: Evolution, Adaptation. Twenty Questions. 1. Why are many species no longer on Earth?. They turned into fossils They adapted They became extinct They turned into populations. 2. What do scientists think happens as populations change over time?.

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Twenty Questions

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  1. Twenty Questions Subject: Evolution, Adaptation

  2. Twenty Questions

  3. 1. Why are many species no longer on Earth? • They turned into fossils • They adapted • They became extinct • They turned into populations

  4. 2. What do scientists think happens as populations change over time? • Species stay the same • New species Form • Fossils die out • Evolution Stops

  5. 3. What is it called when populations slowly change over time? • Evolution • Overpopulation • Adaptation • Natural Selection

  6. 4. Evidence that organisms have changed over time is buried where? • In the atmosphere of the Earth • In the sands by desert winds • Within the Earth’s crust • In the falling rain

  7. 5. What are fossils? • Old rock formations • Layers of Earth • Organisms adapted to their surroundings • Trace remains of organisms that lived a long time ago

  8. 6. What can comparing different groups of animals show? • Their identical adaptations • Their common ancestry • Their identical evolution • Their ability to mate with each other

  9. 7. What do all plants and animals get from their ancestors? • Learned behaviors • Hind limbs • Front limbs • Traits and DNA.

  10. 8. How is your hand like a bat’s wing? • Your hands have similar bones • You hand does similar things • Your hand has similar muscles • Your hands look the same

  11. 9. Why does your hand have almost the same bones as a dolphin’s flipper? • Dolphins evolved from people • Dolphins and people have a common ancestor • People evolved from dolphins • Flippers are the same as hands

  12. 10. Why do scientists support the theory that all species share a common ancestor? • All existing species have DNA • All existing species are mammals • All existing species breathe air • All existing species have limbs

  13. 11. Which of the following factors is necessary in order for natural selection to occur in a species? • A genetic variation within a population • B an abundance of food resources • C a hospitable environment • D a strong family structure

  14. 12. The branching diagram shows the relationship between several species of finches. Which species’ DNA is most similar to the DNA of the tree finch? • A Ground finch • B Cocoa finch • C Vegetarian finch • D Warbler finch

  15. 13. Which of the following is an example of natural selection? • A bears moving into a new part of a forest over many generations • B a tree growing towards sunlight • C shrubs growing longer thorns over many generations • D a plant growing between rocks

  16. 14. Charles Darwin noticed that finches on different islands of the Galápagos Islands were similar but that their beaks differed. What explanation for these differences did he propose? • A The beaks of the finches are adapted to the way the bird usually gets food. • B Specific genetic mutations occur that make beak size change in response to random selection factors. • C The different beaks of the finches would one day evolve into identical beaks. • D Beak size is related to the size of the finch.

  17. 15. A scientist is studying fossils from different layers of sedimentary rock. Which rock layer will contain fossils that most closely resemble present-day organisms? • A older rock layers • B newer rock layers • C all of the rock layers • D none of the rock layers

  18. 16. A population of organisms is separated into two groups for many years. When will the two populations be considered two different species? • A when the populations live in different habitats • B when the populations eat different food • C when the populations behave differently • D when the populations can no longer interbreed

  19. 17. The table shows average beak measurements for birds living on three islands. If narrow beaks are best for eating insects, on which island would you expect to find the most birds that eat insects? • A Verde Island • B Azul Island • C Rosa Island • D Verde Island and Azul Island

  20. 18. Which of the following is an example of selective breeding? • A Populations of lizards that have a certain trait become more numerous after a change in climate. • B Farmers allow only sheep that produce the best wool to breed. • C A population of bacteria develops resistance to an antibiotic. • D A population of insects develops resistance to a pesticide after farmers repeatedly use the same pesticide to kill the insects.

  21. 19. Charles Darwin’s theory of natural selection was based partly on his observation that • A DNA is the genetic material of all living things. • B all eukaryotic cells have a nucleus. • C some organisms have more offspring than others do. • D garden pea plants can self-pollinate.

  22. 20. Which of the following organisms will most likely become a fossil? • A A plant that is covered by a lava flow. • B A small lizard that is covered by tree sap. • C A deer that is killed and eaten by predators. • D A bacterium that dies on the bottom of the ocean.

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