Explain why the roots of a plant grow in all directions if there is no gravity

Roots apparently don't need gravity to orient their directional skewing. ... "It seems that other features of the environment are also required to ensure that a root grows away from the seed, thereby enhancing its chances of finding sufficient water and nutrients to ensure its survival

Roots apparently don't need gravity to place their directional skewing. They will grow away from a light source but of gravitational forces. Although plants on Earth do use gravity to help determine their direction of growth, it is clear that gravity is neither essential for root positioning nor the only factor controlling root growth patterns. In order to get water and other essential nutrients, the roots of plants grow in all directions if there's no gravity.

i think the miocene epoch spans the time from 23 million to 12 million years ago.