FSc Biology Book2, CH 16, LEC 2, Significance of Secondary Growth in Plants
This video lecture from Support and Movement (F.Sc. second year Biology) covers: growth in plants i.e. primary and secondary growth, annual ring, callus formation, sap wood and heart wood 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