Natural Cycles: Hibernation and Estivation

The video explains how animals like salamanders and frogs hibernate in cold climates, using adaptations such as antifreeze-like substances in their tissues to survive freezing temperatures. It also discusses how some plants, particularly in hot and dry climates like California, enter a state of dormancy called aestivation during the summer, appearing dead but reviving with rainfall in cooler seasons.

What adaptation helps frogs survive freezing temperatures during hibernation?

• Migration to warmer areas

• Antifreeze-like substances in their tissues

• Increased body fat

• Thick fur

Which animals are mentioned as hibernating in the mud during winter?

• Birds and insects

• Bears and wolves

• Salamanders and frogs

• Deer and rabbits

What is the term used for dormancy in plants during hot and dry summers?

• Photosynthesis

• Hibernation

• Aestivation

• Migration

In which region are summers described as hot and dry, affecting plant life?

• Florida

• New York

• California

• Alaska

What happens to grasses in California when rain falls in the fall and winter?

• They die permanently

• They begin to thrive again

• They migrate to cooler areas

• They produce flowers