It seems Mammootty’s My tree challenge is gaining momentum day by day. After Mollywood actors like Fahadh Faasil and Aparna Gopinath, the B’town actress Bipasha basu has taken up the challeng and she dared Mohanlal and Hrithik Roshan to be the part of the green Revolution. The actress was shooting for her latest flick "Alone" in Alappuzha and there she came to know about "My Tree Challenge". She expressed her interest to accept the challenge and planted a Mango sapling at the shooting location.