This video lecture from Transport (F.Sc. First Year Biology) covers Factors affecting rate of transpiration. Various factors that affect the rate of transpiration like temperature, wind, humidity, soil water content have been discussed in details. The lecture also discusses the need and importance of transpiration for plants despite its seemingly harmful effects. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.