लैमार्कवाद का मूल सिद्धान्त है ? - What is the basic principle of Lamarckism? - lamarkvaad Ka Mool Sidhhant Hai ? General Science in hindi, Biology uparjit lakshano Ki vanshagati question answers in hindi pdf Jeevan Sangharsh questions in hindi, Know About vibhinntayein General Science online test General Science notes in hindi quiz book Naye angon Ka Avirbhaw