In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Comprehension:
With over 49,000 plant species (1) ______ as of 2018, India holds (2) ______ 11.5% of all the flora in the world. Now, a new fossil record has (3) ______ that India is the birthplace of Asian bamboo, and they (4) ______ formed about 25 million years ago in the north-eastern (5) ______ of the country.