Celery stalks that are immersed in fresh water for several hours become stiff. Which of the following statements best explains the observation that similar stalks left in a 0.15 M salt solution become limp?
A) The fresh water and the salt solution are both hypertonic to the cells of the celery stalks.
B) The fresh water is hypotonic and the salt solution is hypertonic to the cells of the celery stalks
C) The fresh water is hypertonic and the salt solution is hypotonic to the cells of the celery stalks
D) The fresh water is isotonic and the salt solution is hypertonic to the cells of the celery stalks

Question

Quizplus · Accepted Answer

The fresh water is hypotonic to the celery cells, causing water to move into the cells by osmosis, making them stiff. The salt solution is hypertonic, drawing water out of the cells, causing them to become limp.

Celery Stalks That Are Immersed in Fresh Water for Several