Sample questions
6 questions from change over time. Choices stay unmarked.
- 1.
Shell fossils are found in rock 750 metres up a mountain. What is the best explanation?
- Ashells climbed the mountain after they died
- Bthe mountain formed from living shells
- Cthat rock was once under the sea
- Dfossils form only in air, never underwater
- 2.
Which outcome is most likely when a species cannot adapt or move as its only habitat disappears?
- Aall individuals becoming producers
- Binstant evolution into a new form
- Cthe habitat reforming itself
- Dextinction
- 3.
Mason studies mice on dark soil. Dark fur becomes more common over 420 years. Why?
- Alight mice turned dark overnight
- Bthe soil dyed the mice darker each year
- Ceach mouse chose to change its colour
- Ddark mice were more likely to survive and have young
- 4.
Scientists record that a bird species with thin beaks declines when only hard seeds remain. Birds with thicker beaks become more common. What best explains the change?
- AThin-beaked birds chose to grow thicker beaks that year.
- BBirds with thicker beaks were more likely to survive and pass on that trait.
- CHard seeds turned every bird into a fossil.
- DThe birds stopped needing food.
- 5.
Which change is passed to offspring as an adaptation?
- Aa haircut
- Ba coat put on for winter
- Ca dog learning a trick
- Da bird's beak shape
- 6.
A species lives only in wetlands and has no dry-land traits. Over 50 years its habitat shrinks and counts fall from hundreds to dozens. What claim do the data best support?
- AContinued habitat loss puts the species at high risk of extinction.
- BPopulation decline proves the species is evolving faster.
- CThe species will soon develop dry-land traits on demand.
- DWetland animals cannot become extinct.
