Natural Selection Worksheet
Explore the principles of natural selection, including variation, inheritance, struggle for existence, and differential survival and reproduction, with this Grade 7 science worksheet.
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Natural Selection Worksheet
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Read each question carefully and answer to the best of your ability. Good luck!
1. Which of the following is NOT a main principle of natural selection?
Variation within a population
Inheritance of acquired traits
Struggle for existence
Differential survival and reproduction
2. What does 'survival of the fittest' primarily refer to in natural selection?
The strongest animals always win fights.
Organisms that are best adapted to their environment are more likely to survive and reproduce.
The largest organisms in a population.
Organisms that can outrun all predators.
3. Natural selection is the process by which populations of organisms change over time as a result of individuals with certain heritable traits leaving more than others.
4. The variety of traits within a population is called .
5. Explain how a change in environment can lead to natural selection in a species. Provide an example.
6. Individuals can change their genetic traits during their lifetime to better adapt to their environment.
True
False
7. Natural selection always results in more complex organisms.
True
False
8. Observe the image below, which illustrates natural selection in elephants. Explain what is happening in the diagram in terms of natural selection principles.
