Which plant was added to the Guinness Book of Records as the fastest growing plant on earth

1)Who is known as the ‘Waterman of India’ and is renowned for his conservational efforts in bringing back many rivers, and increasing the water table level in Rajasthan?

ans- Dr. Rajendra Singh

2) Like humans, most species in the animal kingdom have a single heart. But there is an exception. How many hearts does an octopus have?

ans- 3

3) Which plant was added to the Guinness Book of Records as the fastest growing plant on earth

ans- Bamboo

4) In the Marvel Cinematic Universe, we see Hulk as a green-coloured giant superhero. But what colour was he meant to be originally?

ans- Grey

5) Sara Ali Khan and Varun Dhawan announced their new film recently. It will be directed by David Dhawan. What is the film called?

ans- Coolie No. 1