Biology JAMB

Which of the following scenarios is an example of cohesion?

A. Water molecules stick to the surface of a mirror.
B. Water sticks to the walls of blood vessels.
C. Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle.
D. Water molecules stick to one another and form a bead

Correct Answer:

Option D – Water molecules stick to one another and form a bead

Explanation

Cohesion is an ability of water molecule to stick to one another due to the presence of hydrogen bonding

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