Mangrove trees have the adapted root called _______ for the purpose of breathing.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Environment of Mangrove Trees**: Mangrove trees typically grow in coastal areas where the soil is often waterlogged and clayey. This environment is characterized by high humidity and a deficiency of oxygen in the soil.

2. **Identifying the Problem**: Due to the low oxygen levels in the clay soil, mangrove trees face difficulty in obtaining sufficient oxygen for their survival.

3. **Adaptation of Roots**: To overcome the challenge of low oxygen availability, mangrove trees have developed specialized root structures. These adaptations allow the trees to access oxygen from the atmosphere.

...