JAMB - Biology (2017 - No. 13)
Which of the following scenarios is an example of cohesion?
Water molecules stick to the surface of a mirror.
Water sticks to the walls of blood vessels.
Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle.
Water molecules stick to one another and form a bead
คำอธิบาย
Cohesion is an ability of water molecule to stick to one another due to the presence of hydrogen bonding