3 Extreme Ways Trees Survive the Winter

The video explores how living organisms, particularly trees, adapt to survive in freezing temperatures. It explains the process of extracellular freezing, where ice forms between cells, and supercooling, which prevents dehydration. The video also discusses vitrification, a process where tree cells turn into glass to withstand extreme cold. These adaptations allow trees to survive temperatures as low as -40°C and even lower in some cases.

What is the main problem for cells when water inside them freezes?

• The cells become dehydrated.

• Ice crystals can damage the cell membranes.

• The cells become too warm.

• The cells start to grow rapidly.

How do trees typically prevent ice from forming inside their cells?

• By producing more blubber.

• By forming ice in the spaces between cells.

• By wearing protective layers.

• By increasing the temperature inside the cells.

What is a potential problem caused by extracellular freezing?

• The cells start to multiply.

• The cells become dehydrated.

• The cells lose their color.

• The cells become too hydrated.

What is supercooling in the context of tree cells?

• A way to increase the size of the cells.

• A process where cells heat up to avoid freezing.

• A technique to change the color of the cells.

• A method of keeping liquid inside cells below freezing point without solidifying.

At what temperature does supercooling become ineffective for trees?

• -10 degrees Celsius

• -70 degrees Celsius

• -20 degrees Celsius

• -40 to -50 degrees Celsius

What is vitrification in tree cells?

• A process where cells turn into ice.

• A way to increase the cell's temperature.

• A technique to make cells more colorful.

• A method where cells turn into glass-like state.

Which of the following trees can survive exposure to liquid helium?

• Black locust

• White pine

• Northern white cedar

• Japanese white Birch