You heard that playing classical music for plants helps them grow better and are curious to see the effects of music on plant growth. Therefore, you predict that playing music for plants every day will make them grow taller. You buy 40 plants all with an initial height of 10 cm and place 20 of them in Greenhouse A and 10 of them in Greenhouse
B. Every day you give all 40 plants 200ml of water. After you water them, you play Beethoven for 1 hour only in Greenhouse A. Every week, you measure the height of each plant.
Identify the following:

- Music or no music for 1 hour
- 30 plants that listen to music
- Plant growth
- 10 plants that get silence
- 200 mL of water

1. Independent variable
2. Dependent group
3. Controlled variable
4. Experimental group
5. Control Group