Question

Suggesty why water has to be pumped directly to the plant roots, rather than just poured

Answer 1

Answer:

Because there is no gravity in space and if you pour water from a watering can it would just float around and never get to the roots.

Answer 2

Answer:

Because when the water is pumped directly to the plant roots it will reach the whole plant parts where as when poured it only falls upon the leaves and do not reach the whole parts of plants