Final answer:
Plants adapt to high soil salinity by employing strategies such as filtering salt from water and pumping oxygen into their roots.
Step-by-step explanation:
Plants that grow in high soil salinity have adapted various mechanisms to cope with this challenging environment. Some halophytes, which are plants that can tolerate salty conditions, have filters in their roots that remove salt from the water they absorb. Additionally, certain plants can pump oxygen into their roots. These adaptations allow the plants to survive in saline soil.