Evolution Test 2026
Name_____________________ Period _________
1. A trait that helps an organism survive is
called an ________.
A. mutation
B. adaptation
C. fossil
D. embryo
7. “Fittest” means the organism that is
________.
A. strongest
B. biggest
C. best adapted
D. loudest
2. What is natural selection?
A. Helpful traits become more common over
time
B. Animals choose their traits
C. Organisms never change
D. Fossils form in rocks
8. Birds with larger beaks survive a drought
because they can ________.
A. find food better
B. fly faster
C. hide underground
D. change color
3. Which fossil is older?
A. Fossil in the top layer
B. Fossil in the deeper layer
C. Both are the same age
D. Cannot tell
9. Similar embryos of fish, birds, and humans
suggest they ________.
A. are the same species
B. share a common ancestor
C. all live in water
D. never change
4. Whales, bats, and humans have similar arm
bones. This means they share a ________.
A. predator
B. common ancestor
C. habitat
D. mutation
5. Some beetles are green and some are
brown. Birds eat more green beetles. Over
time, more beetles will be ________.
A. green
B. brown
C. blue
D. gone
6. A change in DNA is called a ________.
A. fossil
B. mutation
C. adaptation
D. beak
10.A group of the same species living together is
a ________.
A. mutation
B. fossil
C. population
D. habitat
11.Which is an environmental pressure?
A. eye color
B. food supply
C. DNA strand
D. bone structure
12.Over many generations, helpful traits usually
become more ________.
A. rare
B. common
C. weaker
D. invisible
Short Answer
13.Explain how natural selection changes a population over time.
Word Bank: traits, survive, reproduce, generations, helpful
Sentence Starters:
● Natural selection is when…
● Organisms with helpful traits…
● Over many generations…
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