Casparian strips in the endodermis primarily regulate the entry of ions into the:
Cortex
Epidermis
Stele
Root hairs
Related Questions
In case of Nitella, ,, and Na follows
Passive diffusion
Facilitated diffusion
Mass flow
Ionic exchange
Which process is responsible for the uptake of mineral ions against the concentration gradient?
Diffusion
Osmosis
Passive transport
Active transport
The term ‘outer space’ represents …A…, while ‘inner space’ represents …B… with reference to absorption of minerals
Identify A and B to complete the given statement
A: Soil solution; B: Inside root cells
A: Inside root cells; B: Soil solution
A: Xylem; B: Phloem
A: Cell wall; B: Cytoplasm
The uptake of which ion is most significantly affected by the availability of oxygen in the soil?
Potassium
Phosphate
Nitrate
Sulfate
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
Iron deficiency in plants often leads to interveinal chlorosis. Considering the role of iron in electron transport and chlorophyll synthesis, which statement BEST explains this observation?
Iron is a key component of the electron transport chain, and its deficiency disrupts energy production needed for chlorophyll synthesis in the interveinal areas.
Iron is essential for chlorophyll synthesis, and its deficiency leads to reduced chlorophyll production, primarily in the interveinal areas.
Iron deficiency primarily affects the vascular tissue of the leaves, leading to reduced chlorophyll transport to the interveinal areas.
Iron deficiency enhances chlorophyll degradation in the interveinal areas, leading to chlorosis.
Which of the following statements are correct about mineral absorption in plants?
In the initial phase, ions are taken up into the outer space of cells, the apoplast. It is a passive process
In the final phase, ions are taken slowly into the inner space, the symplast of cells and it is an active process
Passive movement of the ions into the apoplast occurs through ion channels, transmembrane proteins, which acts as selective pores
All of the above
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
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
