Prepare for NEET Biology Mineral Nutrition with MCQs & PYQs on NEET.GUIDE. Enjoy free practice, previous year questions, and expert solutions to understand nutrient uptake and deficiency.
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
Mycorrhizae enhance nutrient uptake in plants primarily by increasing:
Rate of transpiration
Root hair length
Surface area for absorption
Photosynthetic rate
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
Which process is responsible for the uptake of mineral ions against the concentration gradient?
Diffusion
Osmosis
Passive transport
Active transport
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 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
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 of the following is an example of passive ion transport in plants?
Transport of nitrates into root cells using ATP
Movement of sodium ions out of guard cells
Diffusion of potassium ions into root hairs down a concentration gradient
Uptake of calcium ions into root cells against a concentration gradient
Root hairs are important for ion uptake primarily because they:
Store absorbed ions
Actively transport ions into the xylem
Increase the surface area for absorption
Synthesize carrier proteins for ion transport
Which of the following is NOT a micronutrient required by plants?
Iron
Manganese
Zinc
Carbon
