Casparian strips in the endodermis primarily regulate the:
Rate of transpiration
Entry of water into the xylem
Entry of minerals into the xylem
Movement of sugars through phloem
Related Questions
Which of the following is a micronutrient required for nitrogen fixation in legumes?
Magnesium
Calcium
Molybdenum
Potassium
Plant obtain carbon and most of their oxygen from
Soil
Water
from the atmosphere
Symbiotic organisation
Which of the following is NOT a passive process involved in the uptake of mineral ions by plants?
Diffusion
Mass flow
Ion exchange
Active transport
Plant obtain carbon and most of their oxygen from
Soil
Water
from the atmosphere
Symbiotic organisation
Researchers observed that a specific plant species accumulates high levels of cadmium (Cd) in its tissues, even when grown in soil with relatively low Cd concentrations. Which transport mechanism is MOST likely responsible for this observation?
Passive diffusion across the cell membrane
Facilitated diffusion through non-specific channels
Active transport through Cd-specific transporters with high affinity
Endocytosis of Cd-containing soil particles
The Casparian strip in the endodermis primarily regulates:
Movement of water through the xylem
Entry of water and minerals into the stele
Transpiration rate
Photosynthesis in the leaves
Which of the following is NOT a mechanism by which mycorrhizae enhance mineral uptake in plants?
Increasing the surface area for absorption
Producing chelating agents that solubilize minerals
Directly converting atmospheric nitrogen into usable forms for the plant
Improving the plant's access to phosphorus
Which element is essential for the synthesis of chlorophyll and is often taken up as a divalent cation?
Calcium
Potassium
Magnesium
Iron
Unlike facilitated diffusion, active transport:
Does not require energy
Occurs down a concentration gradient
Uses protein channels
Requires energy
Iron deficiency in plants often leads to interveinal chlorosis. This is primarily due to the role of iron in:
Cell wall formation
Stomatal regulation
Synthesis of chlorophyll
Potassium uptake
