Genetic Variations and Adaptations

In a population of desert plants, the timing of their blooming varies greatly. Some bloom early in the morning, others at mid-day, and others after dark. What environmental pressure might be an advantage for those plants that bloom after dark?

• There is an increase in the population of nocturnal pollinators
• There is a decrease in the strength of solar radiation.
• There is an increase in herbivores that forage at night.
• There is a decrease in water for root absorption.

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Anything that helps an animal survive in its environment.

• counter-shading
• mimicry
• adaptation
• camouflage

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Selective breeding is when

• animals change because of their environment
• humans choose the desired traits and breed animals
• when animals fight each other to survive
• when humans go to the pet store

How do adaptations help animals?

• To hide from predators
• to hunt for food
• to survive in their habitats
• All of these are correct

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What does it mean to hibernate?

• To change your physical characteristics
• To sleep for an extended period of time during the winter
• To travel to a warmer location
• To blend in with the environment

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

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Most adaptations that help an organism survive are passed on from parent to child as ___traits?

• adaptable
• physical
• more
• inherited

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Which is an example of a trait that is an adaptation for cold climate but not for warm climate?

• thick fur and fat
• long claws
• camoflauge
• poisonous chemicals

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Charles Darwin's work contributed to the theory of Natural Selection

• True
• False

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What does the term variation mean?

• The same traits in a population.
• The different ways that traits are expressed in a population.
• The same ways traits are expressed in a population.
• The place where an animal lives.

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