AP BIOLOGY

LABORATORY REVIEW

DIFFUSION AND OSMOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Spartina, a cord grass, grows in salt marshes and stores salt in its roots. This makes the sale concentration in its roots greater than that of the surrounding water. What most likely occurs in response to this sale concentration in the roots?
A
Salt moves into the roots
B
Water moves into the roots
C
Nutrients move out of the roots
D
Water moves out of the leaves and into the air
Explanation: 

Detailed explanation-1: -This makes the salt concentration in its roots greater than that of the surrounding water. What most likely occurs in response to this salt concentration in the roots? Water moves into the roots.

Detailed explanation-2: -Explanation: Hypertonic solutions have a higher solute concentration. When plant cells are placed in such solutions, water will move from inside the plant cell to the outside of the cell, resulting in the shrinking of the cell (the cell is said to be plasmolyzed). This occurs because of osmosis.

Detailed explanation-3: -Which of these is a characteristic of body cells that require large amounts of energy? They have a large number of mitochondria.

There is 1 question to complete.