Transport in Plants - Live Session - NEET & AIIMS 2019Contact Number: 9667591930 / 8527521718Transport in Plants - Live Session - NEET & AIIMS 2019Contact Number: 9667591930 / 8527521718Substances that have a hydrophilic moiety:
1. have to transported across the plasma membrane by active transport
2. can diffuse across the plasma membrane at a slower rate, if larger in size
3. do not need a concentration gradient to diffuse across the plasma membrane
4. need to be facilitated even along the concentration gradient
In gram negative bacteria the outer membrane:
1. is the major permeability barrier
2. is a thick peptidoglycan layer
3. is more permeable to hydrophilic substances
4. is devoid of lipopolysaccharides
In the mycorrhizal symbiotic relationship, the root provides the fungus with:
1. Water
2. Phosphorus
3. N – containing compounds
4. Sodium and potassium
Identify the incorrect statement regarding aquaporins:
1. Water channels are transmembrane proteins made up of eight different types of aquaporins.
2. Water moves most rapidly in tissues that have aquaporin water channels.
3. The presence of water channels increases membrane permeability to water.
4. Aquaporins selectively conduct water molecules in and out of the cell but allow some passage of protons.
Study the given figure where five beakers filled with a solution has a bag with solution of certain molarity suspended in each of them. The bags are made up of semi-permeable membrane. 
What would be the correct order of the beakers in order of the mass of bags after 30 minutes have been allowed to run the experiment [bag with smallest mass to be placed first]?
1. 1, 2, 3, 4, 5
2. 1, 5, 2, 3, 4
3. 4, 3, 2, 5, 1
4. 2, 1, 5, 3, 4
The ion that plays the primary role in basic transport processes in plant cells is:
1.
2.
3.
4.
Which of the following criteria does not pertain to facilitated transport?
1. Requirement of special membrane proteins
2. High selectivity
3. Transport saturation
4. Uphill transport
The water potential of pure water is
1. zero
2. less than zero
3. more than zero, but less than one
4. more than one
A: Like animal cells, sodium ions play the primary role in basic transport processes in plant cells.
R: In plant cells, the membrane potential is established mainly through pumping ofsodium ions by sodium-potassium pumps.
A: The osmotic potential typically has a negligible influence on the mass movement of water in soils.
R: Regions of soil are usually not divided by a semipermeable membrane.