Prepare for NEET Biology Transport in Plants with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert guidance to understand xylem, phloem, and movement of water.
Which factor does NOT significantly influence the rate of imbibition?
Temperature
Water potential gradient
Nature of the imbibant
Presence of light
Which of the following best describes osmosis?
Movement of water from a region of higher water potential to a region of lower water potential through a semi-permeable membrane
Movement of solute from a region of higher concentration to a region of lower concentration
Movement of water from a region of lower water potential to a region of higher water potential
Movement of any substance across a permeable membrane
A cell placed in a hypotonic solution will:
Swell
Shrink
Stay the same
Burst immediately
Which membrane is essential for osmosis?
Semi-permeable membrane
Permeable membrane
Impermeable membrane
Cell wall
What is the driving force for osmosis?
Difference in water potential
Difference in solute concentration
ATP hydrolysis
Temperature
In which direction does water move during osmosis?
From higher water potential to lower water potential
From lower water potential to higher water potential
From higher solute concentration to lower solute concentration
From higher solute concentration to lower solute concentration
Which of the following statements is INCORRECT regarding root pressure?
Root pressure is a positive hydrostatic pressure.
It is mainly responsible for the bulk flow of water in tall trees.
It is a pressure developed in the xylem of roots.
It is generally more effective at night or early morning.
Root pressure is typically highest under which of the following conditions?
High soil moisture and high transpiration rate
Low soil moisture and low transpiration rate
Low soil moisture and high transpiration rate
High soil moisture and low transpiration rate
Which process is directly responsible for creating the osmotic gradient that drives root pressure?
Passive diffusion of water into the xylem
Transpiration pull from the leaves
Photosynthesis in the leaves
Active transport of minerals into the xylem
Guttation, the exudation of water droplets from leaves, is most likely to occur when:
Root pressure is low and transpiration is high.
Root pressure is high and transpiration is high.
Root pressure is low and transpiration is low.
Root pressure is high and transpiration is low.
