AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is capillary action?
A
liquids changing into solids
B
movement of liquids into spaces because pressure is applied
C
movement of liquids into empty spaces without force
D
the growth of a plant
Explanation: 

Detailed explanation-1: -Capillary action (sometimes called capillarity, capillary motion, capillary rise, capillary effect, or wicking) is the process of a liquid flowing in a narrow space without the assistance of, or even in opposition to, any external forces like gravity.

Detailed explanation-2: -Capillary action helps bring water up into the roots. But capillary action can only “pull” water up a small distance, after which it cannot overcome gravity.

Detailed explanation-3: -What is Capillary Action? We can define capillary action as a phenomenon where ascension of liquids through a tube or cylinder takes place. This primarily occurs due to adhesive and cohesive forces. The liquid is drawn upward due to this interaction between the phenomena.

Detailed explanation-4: -Capillary action is caused by the combination of cohesive forces of the liquid and the adhesive forces between the liquid and tube material. Cohesion and adhesion are two types of intermolecular forces. These forces pull the liquid into the tube.

There is 1 question to complete.