Natural Selection Exam

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What are the four main conditions necessary for natural selection?

Back

1. Variation among individuals in a population. 2. Competition for limited resources. 3. Differential survival and reproduction. 4. Heredity of advantageous traits.

Front

What does 'fitness' mean in the context of natural selection?

Back

Fitness refers to an organism's ability to survive and reproduce in its environment.

Front

Which type of variation is essential for natural selection to occur?

Back

Genetic variation is essential for natural selection to occur.

Front

What is an example of a trait that can increase an organism's fitness?

Back

Camouflage in prey species can increase fitness by helping them avoid predators.

Front

How does competition influence natural selection?

Back

Competition for resources leads to survival of the fittest, where only those best adapted to the environment survive.

Front

What is the role of predation in natural selection?

Back

Predation can drive natural selection by favoring traits that help prey avoid being eaten.

Front

What is an adaptation?

Back

An adaptation is a trait that has evolved through natural selection, enhancing an organism's fitness.

Front

How can environmental changes affect natural selection?

Back

Environmental changes can alter the selective pressures on a population, leading to different traits being favored.

Front

What is the significance of the peppered moth in studying natural selection?

Back

The peppered moth demonstrates natural selection, as darker moths became more common in polluted areas due to better camouflage.