Question

Roots growing down into the ground are examples of _____.

phototrophism
geotrophism
thigmotrophism
hydrotrophism

Answer 1

They correct answer is hydrotrophism !!!!

Answer 2

Hydrotropism
because roots go down the soil in search of water, and hydrotropism is basically the movement in response to water,
it is positive hydrotropism if the movement is towards water, and
it is negative hydrotropism if the movement is away from water.