Plants shedding their leaves during the winter season is a natural process known as deciduousness. This process allows plants to conserve water and energy during the colder months and prepare for new growth in the spring. The regions where plants shed their leaves during the winter season are known as cold regions.

Reasons for Plants Shedding their Leaves:

1. Conservation of Water: During the winter season, water is often scarce. By shedding their leaves, plants can conserve water and reduce the amount of moisture lost through transpiration.

2. Conservation of Energy: Without leaves, plants require less energy to maintain themselves during the winter season. This energy can be used to promote new growth in the spring.

3. Protection from Cold: Shedding leaves also protects plants from the cold weather. Leaves are vulnerable to frost damage, and shedding them allows plants to avoid this risk.

Regions Where Plants Shed Their Leaves During Winter:

1. Temperate Regions: Plants in temperate regions, including many areas of North America and Europe, shed their leaves during the winter season.

2. Polar Regions: Plants in polar regions, including the Arctic and Antarctic, also shed their leaves during the winter season.

3. Some Tropical Regions: In some tropical regions, such as the deciduous forests of India, plants shed their leaves during the dry season.

Conclusion:

In conclusion, plants shed their leaves during the winter season to conserve water, energy, and protect themselves from the cold. The regions where plants shed their leaves during the winter season are cold regions, including temperate regions, polar regions, and some tropical regions.

Cold regions.