Clogged stems in cut flowers are caused by an air embolism. An air embolism is
A. Where disease organisms move into the flower from the air clogging the stem.
B. Where a bubble of air enters the xylem preventing water from reaching the flower.
C. Where the different between room and flower cooler temperature clog the stem.
D. Where the flower stem clogs when the flower cooler temperature drops below 36 degrees F.
Answer: B. Where a bubble of air enters the xylem preventing water from reaching the flower.