A researcher is studying ion uptake in plant roots using radioactive tracers. They observe that metabolic inhibitors significantly reduce the uptake of potassium ions, but not the uptake of chloride ions. What can be inferred about the uptake mechanisms of these two ions?
Potassium uptake is primarily active, while chloride uptake may be passive or facilitated.
Both potassium and chloride uptake are primarily active processes.
Both potassium and chloride uptake are primarily passive processes.
Chloride uptake is primarily active, while potassium uptake may be passive or facilitated.
Related Questions
Which process facilitates the transport of ions from the soil solution into the cytoplasm of root cells against their concentration gradient?
Diffusion
Osmosis
Facilitated diffusion
Active transport using proton pumps
Casparian strips in the endodermis primarily regulate the entry of ions into the:
Cortex
Epidermis
Stele
Root hairs
Which of the following is NOT a mechanism involved in the uptake of mineral ions by plant roots?
Active transport
Passive transport
Facilitated diffusion
Exocytosis
Bidirectional translocation of minerals takes place in
xylem
phloem
parenchyma
cambium
Which of the following are reservoirs for phosphorus and nitrogen cycle respectively?
Atmosphere and bedrocks
Bedrocks and atmosphere
Consumers
Atmosphere and producers
The major characteristics of colloids is/are
Homogeneous nature, particle size less than 1nm, transparent, and settling nature
Heterogeneous nature, particle size range of 1nm-1000nm, Tyndall effect, and non-settling nature
Homogeneous nature, particle size greater than 1000nm, opaque, and settling nature
Heterogeneous nature, variable particle size, no Tyndall effect, and settling nature
The initial step in the uptake of mineral ions by root hairs involves:
Active transport into the symplast
Passive absorption into the apoplast
Facilitated diffusion into the vacuole
Endocytosis into the root hair cells
In which of the following iron is absorbed by plants
Fe²⁺ (Ferrous ions)
Fe³⁺ (Ferric ions)
FeO (Iron oxide)
FeS (Iron sulfide)
In the initial phase of minerals absorption ions are taken up
Slowly
Rapidly
Fluently
Simultaneously
What is the major function of air stone?
Remove content from the nutrient solution
Dissolves in the nutrient solution
Increases the level of in the nutrient solutions
Removes from the nutrient solution
