## Book Store

Currently only available for.
CBSE Gujarat Board Haryana Board

## Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12
What are the factors affecting the rate of diffusion?

Factors affecting diffusion :

1. Temperature : The rate of diffusion is directly proportional to the temperature. As the temperature increases the rate of diffusion increases.

2. Surface area : More the surface area more will be the rate of diffusion.

3. Concentration gradient: The rate of diffusion is directly proportional to the concentration gradient.

4. Pressure - Increase in the pressure increase diffusion rate.

5. Permeability of the membrane separating the solutions. More permeable the mebrane more will be the diffusion.

425 Views

What is transmembrane pathway ?

The movement of water through cell membranes is called trans membrane pathway.
1112 Views

Why the cortex produces no resistance to movement of water ?

The cortical cells are loosely packed and produce no resistance to movement of water via cell walls or apoplast.
598 Views

Why the water is forced to move through cell membrane beyond endodermis ?

Water is forced to move through cell membranes beyond endodermis because of the suberin (waxy substance) present on radial walls of endodermal cells blocks water and solute movement through cell walls of endodermis.
923 Views

Give the term for the ability to resist a pulling force.

Tensile strength
731 Views

Who introduced the apoplast—symplast concept ?

E. Munch (1930).
630 Views