According to the cohesion-tension mechanism of water transport, cohesion occurs because

According to the cohesion-tension mechanism of water transport, cohesion occurs because
 
  a. waxy coatings on insides of xylem keep water molecules together in the xylem.
  b. evaporation removes water from the leaves.
  c. water molecules tend to form hydrogen bonds with each other.
  d. water is pushed into the xylem by bulk flow.
  e. water is pushed into the xylem by phloem pressure.

Question 2

The evaporation of water into the air from plant tissues is called
 
  a. cohesion-tension.
  b. photorespiration.
  c. transpiration.
  d. root pressure.
  e. guttation.