Nutrient Uptake Flashcards
1
Q
What type of particles hold cations in soil?
A
Negatively charged clay particles
Cations include ions such as K⁺ and Mg²⁺.
2
Q
What process occurs when root respiration releases CO₂?
A
Forms carbonic acid which releases H⁺ ions
H⁺ ions knock off cations from soil particles into solution.
3
Q
How do nutrients enter the root?
A
Via osmosis or active transport
4
Q
What is Cation Exchange Capacity (CEC)?
A
The ability of soil to hold cations
5
Q
Which type of soil has a high CEC?
A
Clay soils
6
Q
Which type of soil has a low CEC?
A
Sandy soils
7
Q
What effect does compacted or waterlogged soil have on nutrient uptake?
A
Less oxygen leads to less respiration and less nutrient uptake
