Please explain experts - Botany - Transport in Plants

Question

Please explain experts

Priyanka Sahu · Accepted Answer

Dear Student

Ans Only A, B and E
The polarity and molecular weight of solutes do not really
affect the rate of osmosis since in osmosis the movement of solvent
takes place The same has been explained in detail below:
Osmosis is a type of diffusion Osmosis is the phenomenon when
the two solutions having different osmotic concentration are
separated by a semi- permeable membrane and the movement of solvent
takes place from a region of low concentration of the solute to a
region where there is high concentration of the solute or from a
region where there is high concentration of solvent to a region
where there is low concentration of solvent

Factors Affecting the Rate of Osmosis

Temperature - higher the temperature, the faster the movement
of water molecules across the semi permeable membrane
Surface Area - larger the surface area, the more space for the
molecules to move easily across Smaller the area, the more
restricted the movements of the molecules and the slower the
movement
Difference in Water Potential – Higher the difference in
water potential, the faster the osmosis For the lesser water
molecules are in the region of low concentration, more water
molecules from the region of higher concentration can enter faster
and easier P
Pressure – More the pressure, the faster the molecules
will move for they are being pushed faster across a low
concentration
Concentration gradient - Lower the concentration of the solute
within a solvent, the faster osmosis will occur in that
solvent
Light and dark – Brighter the light, the faster osmosis
takes place
Aquaporins are the small proteins that form pores in the outer
membranes of the plastids, mitochondria and some bacteria allowing
molecules up to the size of small proteins to pass through Water
channels contain different types of aquaporins Aquaporins allow in
& out movement of water molecules & prevent the entry of
other ions inside the membrane The different porins present in the
water channel have different pore size as a result they have
affinity for different molecules

Regards

Please explain experts....