What makes sap go up a tree?
One theory ascribes it to osmotic pressure. Liquids and dissolved substances pass through membranes in living things. This is called osmosis. Dissolved chemicals in contact with a membrane press against it. This is osmotic pressure. Yet another holds that it is because of transpiration and the cohesion of water. Evaporation of water from leaves is transpiration. The attraction between water particles is cohesion.
Related posts:
How did fruits and vegetables get their names? Complete General Knowledge Question and Answer for Cl...
General Knowledge
Do you know "Purifying water with waste".
Do you know
Why did Egyptian priests wear a jackal's head? Complete General Knowledge Question and Answer for Cl...
General Knowledge
Why is America called Uncle Sam? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
Do you know “Mango Festival”.
Do you know
Which dinosaurs had the heaviest bones? Complete General Knowledge Question and Answer for Class 6, ...
General Knowledge
Do you know “Taj-ul-Masjid is among the largest mosques”.
Do you know
GK Question "Why Do Salmon Go Up Stream To Spawn?" general knowledge book English 2021 current affai...
General Knowledge
GK Question "Why Do We Have Hunger?" general knowledge book English 2021 current affairs quiz and an...
General Knowledge
Which is the biggest planet?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
What is amnesia? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 ...
General Knowledge
What is pollination? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
When did man first build houses? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge
When did man start using cow's milk? Complete General Knowledge Question and Answer for Class 6, 7, ...
General Knowledge
What is a colour wheel? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 ...
General Knowledge
GK Question "The Matches Was Invented By Whom?" general knowledge book English 2021 current affairs ...
General Knowledge
How tall is the Leaning Tower of Pisa? Complete General Knowledge Question and Answer for Class 6, 7...
General Knowledge
What is a photoelectric cell? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 1...
General Knowledge
GK Question "How The Earthquakes Are Recorded On A Seismograph?" general knowledge book English 2021...
General Knowledge
What were the homes of the Celts like? Complete General Knowledge Question and Answer for Class 6, 7...
Uncategorized