Question

how does transport of water takes place intall trees

Answer 1

In tall trees, water supply can be limited by two factors: distance and gravity. Tall trees have a longer path- way of transport tissue – known as xylem – which increases the difficulty of water to travel, something we call hydraulic resistance. In addition, not only is the xylem pathway long, but the trees are tall and the water has to overcome gravity. Increased force is necessary to pull the water up to the highest leaves. This situation differs from a long hosepipe lying along the ground: it would have high resistance due to its length, but not the additional difficulty of being upright.