Week 3 Homework

This is the organisms with traits best suited to their environment are more likely to survive and reproduce.

• Variation

• Mutation

• Natural Selection

• Gradualism

This is any variation that makes an organism better suited to its environment.

• Evolution

• Graduation

• Species

• Adaptation

Which feature helps an animal hide from other animals?

• looking like a dangerous animal
• being the same color as the place it lives (camoflauge)
• having sharp claws or a strong shel
• having only a few young and caring for them

How do adaptations help animals?

• To escape animals

• to hunt for food

• to survive in their habitats

• All of these are correct

Which feature of a rose helps it grow without being eaten by large animals?

• flowers with bright colors
• sharp thorns
• small seeds
• deep roots

Which of the following is a physical adaptation for the underlined animal?

• A butterfly has bright colors to warn predators that it is poisonous.
• A hognose snake rolls over, slows its breathing, and hangs its tongue out to play dead.
• A herd of buffalo encircle their young to protect them from a pack of wolves.
• A dung beetle rolls a piece of dung across the desert.

Polar bears have compact ears, a small tail, and thick fur to keep themselves warm. Are these examples of physical (structural) or behavioural adaptations?

• Physical
• Behavioural

Which statement does not accurately describe natural selection?

• Individual organisms change their genes to adapt to their environment
• The genetic composition of a population changes from one generation to the next
• More advantageous traits become more common in population
• Beneficial and useful traits are inheritable

Which of the following ideas is supported by Darwin’s observation of local variation among tortoises in the Galápagos Islands? 

• artificial selection
• adaptation
• acquired characteristics
• tendency towards perfection

An inherited characteristic that increases an organism's chance of survival

• adaptation

• evolution

• fitness