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
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
What is the primary role of carrier proteins in ion uptake?
Store ions within the vacuole
Convert ions into usable forms
Facilitate the movement of ions across the cell membrane
Prevent the entry of unwanted ions
Casparian strips in the endodermis primarily regulate the entry of ions into the:
Cortex
Epidermis
Stele
Root hairs
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
Mycorrhizae enhance nutrient uptake in plants primarily by increasing:
Rate of transpiration
Root hair length
Surface area for absorption
Photosynthetic rate
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
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 macronutrient which is an essential component of all organic compounds, yet not obtained by plants from soil is
Nitrogen
Carbon
Phosphorus
Magnesium
Minerals are absorbed by plants in
Colloidal form
ionic form
Precipitated form
None of these
For the uptake of ions in the first phase of absorption of minerals, the pathway followed is called
Active uptake
Passive uptake
Neutral
None of these
