How ascent of sap takes place in plant
Answers
Answered by
12
Hope it helps you☺☺☺
Attachments:
Answered by
14
Hi dear
Here is ur
The ascent of sap in the xylem tissue of plants is the upward movement of water and minerals from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids. Both of these cell types have thick, lignified secondary cell walls and are dead at maturity. Although several mechanisms have been proposed to explain the phenomenon, the cohesion-tension mechanism[1] has the most evidence and support. Although cohesion-tension has received criticism, for example due to the apparent existence of large negative pressures in some living plants, experimental and observational data favor this mechanism.[2] [3]
The more recently proposed compensating pressure (CP) theory favors a version of vital theory proposed by Jagdish Chandra Bose. However, experimental evidence has not supported it [4]
An alternative theory based on the behavior of thin films has been developed by Henri Gouin, a French professor of fluid dynamics.[5] The theory is intended to explain how water can reach the uppermost parts of the tallest trees, where the applicability of the cohesion-tension theory is debatable.[6]
Hope it hlps
☺☺☺☺☺☺
Here is ur
The ascent of sap in the xylem tissue of plants is the upward movement of water and minerals from the root to the crown. Xylem is a complex tissue consisting of living and non-living cells. The conducting cells in xylem are typically non-living and include, in various groups of plants, vessels members and tracheids. Both of these cell types have thick, lignified secondary cell walls and are dead at maturity. Although several mechanisms have been proposed to explain the phenomenon, the cohesion-tension mechanism[1] has the most evidence and support. Although cohesion-tension has received criticism, for example due to the apparent existence of large negative pressures in some living plants, experimental and observational data favor this mechanism.[2] [3]
The more recently proposed compensating pressure (CP) theory favors a version of vital theory proposed by Jagdish Chandra Bose. However, experimental evidence has not supported it [4]
An alternative theory based on the behavior of thin films has been developed by Henri Gouin, a French professor of fluid dynamics.[5] The theory is intended to explain how water can reach the uppermost parts of the tallest trees, where the applicability of the cohesion-tension theory is debatable.[6]
Hope it hlps
☺☺☺☺☺☺
Similar questions