Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all.4. in the experiment described in the scenario, which group represents the control group?

Plant D

Explanation:

The control group is the plant that receives no treatment by the researchers, and is used as a "growth marker" for the others.

Plant D does not listen to any music at all.

Explanation:

Control group is a group in the experiment which does not receive any treatment. It is kept as a benchmark for comparision with other variables.

Plant D does not listen to any music at all is the correct option. As it is not treated with the experimental variable that is music.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands