Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a 0.15 M salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are
A) hypotonic to both fresh water and the salt solution.
B) hypertonic to both fresh water and the salt solution.
C) hypertonic to fresh water but hypotonic to the salt solution.
D) hypotonic to fresh water but hypertonic to the salt solution.
E) isotonic with fresh water but hypotonic to the salt solution.

Question

Quizplus · Accepted Answer

The cells of the celery stalks are hypertonic to fresh water, causing water to enter the cells and make them stiff. In the salt solution, the cells are hypotonic, causing water to leave the cells and making them limp.

Celery Stalks That Are Immersed in Fresh Water for Several