Natural Versus Artificial Selection in Evolution

The video tutorial discusses the differences between natural and artificial selection. Natural selection is when nature decides which organisms survive based on traits like sharp teeth in cougars or drought resistance in plants. Artificial selection is when humans choose which organisms survive based on traits like cuteness, leading to domesticated animals like cats and dogs. The video uses examples of cougars and plants to illustrate these concepts, emphasizing how human preferences can influence evolution.

What is the primary difference between natural and artificial selection?

• Natural selection is a faster process than artificial selection.

• Natural selection occurs in nature without human intervention, while artificial selection is driven by human choices.

• Artificial selection only applies to animals, not plants.

• Natural selection is based on human preferences, while artificial selection is based on survival.

In the example of cougars, what characteristic determined their survival in natural selection?

• Color of fur

• Size of paws

• Sharpness of teeth

• Cuteness

How do humans typically choose animals in artificial selection?

• Based on their speed

• Based on their cuteness or appeal

• Based on their ability to survive in the wild

• Based on their size

What is an example of artificial selection in animals?

• Breeding dogs for specific traits

• Allowing only the strongest lions to survive

• Selecting birds with the brightest feathers

• Choosing the fastest cheetah

In the plant example, what characteristic allows certain plants to survive in natural selection?

• Fragrance of the flowers

• Height of the plant

• Resistance to drought

• Color of flowers

Why might humans choose to grow a particular flower in artificial selection?

• Because it grows the fastest

• Because it is the cutest or most appealing

• Because it is the tallest

• Because it is the most drought-resistant

What is a key factor in natural selection?

• Speed of growth

• Human preference

• Aesthetic appeal

• Survival ability in the wild

Which of the following is true about artificial selection?

• It is based on survival of the fittest.

• It only applies to animals, not plants.

• It is a natural process without human intervention.

• It often involves selecting traits based on human preferences.

What is the outcome of artificial selection over time?

• Species develop traits that are appealing to humans.

• Species become less diverse.

• Species become more adapted to their natural environment.

• Species become more resistant to diseases.

How does artificial selection differ from natural selection in terms of decision-making?

• Artificial selection is based on environmental factors.

• Natural selection is influenced by human choices.

• Natural selection is faster than artificial selection.

• Artificial selection is driven by human preferences.