Question

should be true about this experiment, based on good experimental design? An experiment is conducted using 2 plants to determine if the amount of sunlight they receive affects how fast they grow. Which should be true about this experiment, based on good experimental design?
Each of the plants should be planted with different types of soil.

Both plants should receive the same amount of sunlight each day.

Each of the plants should be planted with different types of fertilizer.

1 plant should receive sunlight each day, and 1 plant should never receive sunlight.

Answer 1

Greetings!

The correct answer choice is Choice 4.

Why?

In a scientific experiment the only thing being changed is the independent variable. Everything else should stay the same.

In this experiment, the independent variable is the amount of sunlight each plant should receive. Here's a tip- when looking for and independent variable look for whats being changed on purpose.

Hope this helps!

~Fluerie