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
Related Questions
The uptake of which ion is most significantly affected by the availability of oxygen in the soil?
Potassium
Phosphate
Nitrate
Sulfate
Which of these is NOT directly involved in the active uptake of ions by plant roots?
Root hairs
Casparian strip
Plasma membrane ATPase
Stomata
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
A plant exposed to high levels of aluminum in the soil exhibits stunted root growth. Which of the following mechanisms is the MOST likely cause of this effect?
Aluminum directly inhibits photosynthesis, reducing energy available for root growth.
Aluminum competes with potassium for uptake, leading to potassium deficiency in roots.
Aluminum interferes with the function of calcium channels and disrupts cell wall formation.
Aluminum stimulates excessive ethylene production, inhibiting root elongation.
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
Active transport of ions by the cell requires
Alkaline pH
Salts
High temperature
ATP
The entry and exit of ions to and from the symplast requires the expenditure of
Photosynthetic energy
Metabolic energy
Energy derived from ions
Zero amount of energy
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.
The Casparian strip in the root endodermis primarily aids in:
Preventing water loss from the root
Increasing surface area for absorption
Storing excess ions
Regulating the entry of water and minerals into the xylem
Which process is responsible for the uptake of mineral ions against the concentration gradient?
Diffusion
Osmosis
Passive transport
Active transport
