Differentiate between the following:
(a) Diffusion and Osmosis
(b) Transpiration and Evaporation
(c) Osmotic Pressure and Osmotic Potential
(d) Imbibition and Diffusion
(e) Apoplast and Symplast pathways of movement of water in plants.
(f) Guttation and Transpiration.

Differentiate between apoplast and symplast pathways of water movement. Which of these would need active transport ?

During rainy season wooden doors and windows are not properly closed. Why? (A) Diffusion (B) Plasmolysis (C) Osmosis (D) Imbibition

Correct the statements. (a) Cells shrink in hypotonic solutions and swell in hypertonic solutions. (b) Imbibition is a special type of diffusion when water is absorbed by living cells. (c) Most of the water flow in the roots occurs via the symplast.

Which of the following does not affect water potential of Water ? (A) Concentration of dissolved substances (B) Atmospheric pressure (C) Gravitation (D) Capillarity

In tall plants, because of which factor, continuous water column extends upward ? (A) Atmospheric pressure (B) Osmotic pressure (C) Suction pull (D) Root pressure

Surafce tension is exhibited by liquids due to force of attraction between the molecules of the liquid .The surface tension decreases with increases in temperature and vanishes at boiling point Given that the latent heat of vaporization for water L_(v)=540(kcal)/(kg) the mechanical equivalent of heat J=4.2(J)/(cal) density of water rho_(w)=10^(3)kgl^(-1) ,Avogadro'sno. N_(A)=6.0xx10^(26)k " mole"^(-1) . Molecular weight of water M_(A)=10kg , for 1k mole . (a) Estimate the energy required for one molecule of water to evaporated. (b) Show that the inter molecular distance for water is d=((M_(A))/(N_(A))xx(1)/(rho_(w)))^((1)/(3)) and find its value. (c ) 1 g of water in the vapour state at 1 atm occupies 1601cm^(3) , estimate the intermolecular distance at boiling point in the vapour state. (d) During vaporisation a molecule overcomes a force F, assumed constant to go from an inter molecular distance d to d .Estimate the value of F. (e ) Caculate (F)/(d) , which is a measure of the surface tension.

Study the given figure carefully and select the true and false:- statement(s) regarding it. (a) Solution of chamber B has a lower water potential. (b) Solutio of chamber A has a lower solute potential (c). Osmosis occurs from chamber A to B. (d) Solution f cham ber B has higher solute potential. (e) At equlibrium both chambers have equal water potential. (f) If one chamber has a Psi of -2000 kPa and the other -1000kPa then chamber with Psi of -1000 kPa has the highger Psi

The cross section of a plant material shows the following anatomical featrues under microscope: (a) Sclerenchymatous bundle sheath (b) Many vascular bundles are scattered in parenchymatous ground tissues, each vascular bundle is surrounded by sclerenchymatous bundle sheath. (c) Vascular bundles are usually oval shaped. (d) Vascular bundles are conjoint, collateral & closed and xylem is endarch (e) Phloem parenchyma is absent and water containing cavities are present within the vascular bundles: The plant material should be: