Unit 1 Mid Unit Review - Life in Extremes

What is an adaptation?

• A change in an organism's DNA

• A trait that improves an organism's ability to survive and reproduce

• A sudden change in the environment

• An inherited trait that decreases survival chances

Which of the following is an example of a structural adaptation?

• A bear hibernating in winter

• A chameleon's color change

• A bird's beak shape

• A fish swimming upstream

What is a mutation?

• A temporary change in behavior

• A seasonal migration pattern

• An adaptation to temperature changes

• A random permanent change in the DNA sequence

What is an extremophile?

• An organism that lives in moderate environmental conditions

• An organism that thrives in extreme conditions

• A plant that requires a lot of sunlight

• A predator at the top of the food chain

Which of the following is NOT an example of an extreme environment?

• Deep ocean vents

• Rainforests

• Hot springs

• Polar ice caps

What role do mutations play in evolution?

• They prevent new species from forming

• They eliminate genetic diversity

• They provide new traits that can be beneficial

• They make species go extinct

Which of the following is an example of a behavioral adaptation?

• A turtle's hard shell

• Birds migrating south for winter

• A fish's gills

• A cactus's spines

Why are some plants considered extremophiles?

• They grow only in rich soil

• They can survive with little water

• They require constant sunlight

• They have colorful flowers

Which of the following is an example of a physiological adaptation?

• A bird's nest-building behavior

• A lion's mane

• The ability to produce antifreeze proteins in fish

• A rabbit's long ears

What is the primary purpose of camouflage as an adaptation?

• To attract mates

• To regulate body temperature

• To avoid predators

• To find food more easily