6P.12—Unit 6 planning an investigation

A Unit 6 investigation should state a focused question, biological rationale, variables, range, controls, repeats, risk assessment and analysis plan before data collection.

To test a plant response, define the stimulus and measurable outcome, justify the range, and decide how to control light, temperature, water and starting material.

A broad topic is not a testable question, and a method cannot rescue an unmeasurable endpoint.