Madhyamik life science suggestion 2021//class 10 west bengal board jibon biggan best 5 mark question

Very important for west bengal board of secondary education students of class 10.
Link of all lifesciences suggestion 2021.
https://www.youtube.com/playlist?list=PLoLAyDE7X4OWfTQ-5ewyDNTZN6gLPy8uh