Unit 4 Lesson 3 Understanding Natural Selection and Evolution

Multiple Choice

What does 'fitness' mean in a biological context?

• The ability to survive and reproduce

• Physical strength

• Speed and agility

• Ability to hunt successfully

Multiple Select

Which of the following are sources of genetic variation in a population?

• Genetic mutations

• Sexual reproduction

• Environmental influences

• Migration

Multiple Choice

Which environmental pressure can challenge the survival of organisms?

• Habitat loss

• Increased rainfall

• Stable climate

• Abundant food supply

Multiple Choice

What is a potential negative consequence of artificial selection on biodiversity?

• Reduced genetic diversity

• Increased resistance to disease

• Greater environmental stability

• More food sources

Multiple Choice

Which of the following is a negative effect of artificial selection on survival and reproduction?

• Loss of genetic diversity

• Increased yields in agriculture

• Specific traits for pets

• Improved ecosystem resilience

Multiple Choice

Artificial selection can impact biodiversity in which of the following ways?

• It increases genetic diversity by introducing new traits.

• It decreases genetic diversity by favoring certain traits.

• It has no effect on biodiversity.

• It always leads to extinction of species.