Transport of Water and Minerals (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
ShowHide
Practise the questions
15 questions from this quiz
What is magnesium (Mg) needed for in plants?
What is magnesium (Mg) needed for in plants?
Chlorophyll formation
What is calcium (Ca) needed for in plants?
What is calcium (Ca) needed for in plants?
Middle lamella formation
What are nitrates needed for in plants?
What are nitrates needed for in plants?
DNA replication
How do minerals enter root hairs?
How do minerals enter root hairs?
By active transport
Active transport moves substances from low to high concentration against what?
Active transport moves substances from low to high concentration against what?
A concentration gradient
Which adaptation do root hairs NOT have for absorbing water?
Which adaptation do root hairs NOT have for absorbing water?
Thick cuticle layer
Is the solute concentration in root cells higher or lower than in the surrounding soil water?
Is the solute concentration in root cells higher or lower than in the surrounding soil water?
Higher
What are the two mechanisms by which water passes up through the xylem?
What are the two mechanisms by which water passes up through the xylem?
Root pressure and cohesion-tension
Is root pressure alone enough to push water to the tops of very high plants?
Is root pressure alone enough to push water to the tops of very high plants?
No, it is not enough
Who proposed the cohesion-tension model and in what year?
Who proposed the cohesion-tension model and in what year?
Dixon and Joly in 1894
Which forces are stronger in water transport?
Which forces are stronger in water transport?
Cohesive forces
What is transpiration?
What is transpiration?
Loss of water vapour from aerial parts
What substance strengthens xylem walls to prevent collapse under pressure?
What substance strengthens xylem walls to prevent collapse under pressure?
Lignin
Where are stomata found on leaves?
Where are stomata found on leaves?
On the undersurface
What regulates the opening and closing of stomata?
What regulates the opening and closing of stomata?
levels