What do you mean by Active transport and passive transport ?

Biology 


Active Transport :- 

The passage of salt or ions of a substance from its lower concentration to higher concentration utilizing the energy from the cell through a living membrane is known as Active transport. Active transport is just opposite of diffusion. The ions of certain elements such as nitrate , sulphates ,manganese, etc . Cannot easily pass through the cell membranes of root cells. This is because their concentration is higher inside. 



Passive Transport :-

Diffusion, Osmosis, and Imbibition are the example of Passive Transport. Passive Transport always occur in plants . Imbibition os the process by which plant cell (living or Dead) absorb water by surface attraction. Imbibition results in swelling of tissues for germination of seeds. Swelling of wooden doors during rainy season is also due to imbibition. 


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