Transport of Water in the Xylem (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main function of root hair cells in water absorption?
What is the main function of root hair cells in water absorption?
Increase surface area for absorption
What is transpiration?
What is transpiration?
Evaporation of water from leaf surfaces
Where are stomata mainly located on leaves?
Where are stomata mainly located on leaves?
On the undersides of leaves
What happens to water potential when mesophyll cells lose water?
What happens to water potential when mesophyll cells lose water?
It decreases (becomes more negative)
What property allows water molecules to stick together in xylem vessels?
What property allows water molecules to stick together in xylem vessels?
Cohesion via hydrogen bonds
How does water move up xylem vessels according to cohesion-tension theory?
How does water move up xylem vessels according to cohesion-tension theory?
Pulled up under negative pressure
What happens to tree trunk diameter during the day when transpiration is highest?
What happens to tree trunk diameter during the day when transpiration is highest?
Trunks become measurably thinner
What happens when a xylem vessel is broken and exposed to air?
What happens when a xylem vessel is broken and exposed to air?
Air is drawn in
What is the energy source for the water transport process in plants?
What is the energy source for the water transport process in plants?
Solar radiation
What is the structure of xylem vessels?
What is the structure of xylem vessels?
Dead cells with no end walls