What is the response of a plant seedling to the force of gravity?

Gravitropism (also known as geotropism) is a turning or growth movement by a plant or fungus in response to gravity. It is a general feature of all higher and many lower plants as well as other organisms. Wikipedia

The response of a plant seedling to the force of gravity is called gravitropism or geotropism. The seedling's roots grow toward the pull of gravity while the shoots grow away from the force of gravity.