Answer:
The roots take part in the transport of water in a plant by absorbing water from the ground. The stem moves the water to the rest of the plant.
Step-by-step explanation:
When a plant is in wet soil, the roots absorb the water from the ground and carry it to the stem. Then, the steam acts as a passageway and the water goes up the steam, and into other areas of the plant, sucks as leave, and (if the plant has them) flowers.
I hope this answer works, and that it's not late.