Biology Essentials: Response to External Environments

Mr. Anderson discusses how animals, including tardigrades, adapt to external environments. He explains behavioral responses like hibernation and migration, and physiological responses such as shivering and sweating, highlighting their roles in maintaining homeostasis and survival.

What is the primary reason water bears are considered unique in their ability to survive extreme conditions?

• They can survive without oxygen.

• They can fly.

• They can replace water in their bodies with sugar.

• They can change color.

How do water bears survive in space?

• By laying eggs that can survive harsh conditions

• By entering a state of suspended animation

• By using oxygen tanks

• By growing larger

Which of the following is a behavioral response to cold weather?

• Panting

• Shivering

• Hibernation

• Sweating

Which of the following is NOT a behavioral response to environmental changes?

• Migration

• Torpor

• Sweating

• Hibernation

What is the main difference between torpor and true hibernation?

• Hibernation involves migration.

• Torpor requires more energy than hibernation.

• Torpor is a daily cycle, while hibernation lasts longer.

• Torpor occurs only in summer.

What is a common characteristic of animals that undergo true hibernation?

• They migrate to warmer areas.

• They lower their metabolism significantly.

• They stay active throughout winter.

• They maintain a high body temperature.

Which animal is known for its extensive migration from the Northern Hemisphere to New Zealand and Australia?

• Monarch butterfly

• Bar-tailed godwit

• Caribou

• Salmon

What is the primary purpose of shivering in humans?

• To increase metabolism for digestion

• To signal hunger

• To generate heat and maintain body temperature

• To cool down the body

Why is sweating an effective way to cool down the body?

• It increases the body's metabolism.

• It increases blood flow to the skin.

• It allows heat to be carried away through evaporation.

• It reduces the need for water intake.

What physiological response helps humans maintain homeostasis in cold environments?

• Panting

• Sweating

• Shivering

• Hibernating