HORTICULTURE

HORTICULTURE SCIENCE

FLORICULTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Clogged stems in cut flowers are caused by 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.
Explanation: 

Detailed explanation-1: -Surfacing too quickly or holding your breath while you swim to the surface can cause the air in your lungs to expand. This may rupture lung tissue (pulmonary barotrauma), which can lead to gas bubbles being released into the arterial circulation (arterial gas embolism).

Detailed explanation-2: -Whenever tensions in the xylem exceed a critical threshold, air is pulled into the conduit lumen, where it rapidly expands forming an air cavity that blocks the flow of water through the conduit (i.e. embolism).

Detailed explanation-3: -Final answer: If the xylem vessels of plant are plugged, the plant will wilt (shrivel).

There is 1 question to complete.