The Video lecture from Gaseous Exchange (F.Sc. First Year Biology) covers the detail description of how plants exchange carbon dioxide and oxygen gas during the process of photosynthesis and respiration. It also covers the concept of Photorespiration in plants and under which circumstances, photorespiration occur in plants. 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.