Identify a plant with the information given in the below statements:
1. This plant is a Pteridophyte and has a symbiotic relationship with a cyanobacterium, thus capable of nitrogen fixation.
2. Due to high capability to use the atmospheric nitrogen for growth, it has been termed a “super plant” which makes it a notorious weed.
3. However, it has been used for thousands of years in China/ South East Asia as a green manure for improving per hectare gain of rice
4. The myth, that when this plant is in bloom, no mosquito can cross its covering to the water in the water body to lay eggs has earned it a name called “Mosquito Fern”.
Select the correct option:

Answer: [B] Azolla

Azolla due to this specific capability is known to have been responsible for the Azolla Event that took place some 49-50 million years ago, in the Eocene.

This question is a part of GKToday's Integrated IAS General Studies Module