Parts of a plant are underdog are called while those above ground are called
roots or shoots

Parts of a plant are underdog are called Roots while those above ground are called Shoots.

Explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.