Boost Your Evolution IQ

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What is biological evolution?

Back

Biological evolution is the process through which species of organisms change over time through variations and natural selection, but it does not explain the origin of life.

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True or False: Individual organisms can evolve.

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False. Evolution occurs at the population level, not at the level of individual organisms.

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What is natural selection?

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Natural selection is a mechanism of evolution where organisms better adapted to their environment tend to survive and produce more offspring.

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What is a seed coat?

Back

The seed coat is a protective layer that surrounds the seed, providing protection from damage, water loss, and infection.

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How do extreme climate changes affect evolution?

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Extreme climate changes can select for specific traits, such as heat tolerance in plants like cacti, leading to evolutionary adaptations.

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What is the difference between natural selection and evolution?

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Natural selection is one mechanism of evolution; evolution encompasses all changes in the heritable traits of a population over generations.

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What does it mean for a trait to be adaptive?

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An adaptive trait is a characteristic that enhances an organism's ability to survive and reproduce in its environment.

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What is the role of variation in evolution?

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Variation within a population provides the raw material for natural selection to act upon, leading to evolutionary change.

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What is the significance of the phrase 'survival of the fittest'?

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'Survival of the fittest' refers to the idea that individuals with advantageous traits are more likely to survive and reproduce.

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What is speciation?

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Speciation is the evolutionary process by which populations evolve to become distinct species.