18. A student constructs two diagrams that show the states of two plants and their cells.

According to the diagrams of the plant cells, what causes the difference in the two plants?


A. The mitochondrion, which only stores gases for respiration by the leaf cell, has shrunk, causing the plant to wilt.

B. The mitochondrion, which stores food and provides energy to the leaf cell, has stopped working, causing the plant to wilt.

C. The vacuole, which stores water and helps maintain the shape of the leaf cell, has shrunk, causing the plant to wilt.

D. The vacuole, which stores waste products for elimination from the cell, has stopped working, causing the plant to wilt.