How many biosphere reserves are there in India?

Eighteen

There are 18 biosphere reserves in India.

Here is a detailed list of the 18 biosphere reserves in India as of cutoff in September 2021:

1. Nilgiri Biosphere Reserve: Located in the Western Ghats, spanning across the states of Tamil Nadu, Kerala, and Karnataka.
2. Gulf of Mannar Biosphere Reserve: Situated in Tamil Nadu, along the Gulf of Mannar coast.
3. Sundarbans Biosphere Reserve: Located in West Bengal, covering the Sundarbans delta region.
4. Nanda Devi Biosphere Reserve: Situated in Uttarakhand, encompassing the Nanda Devi National Park and Valley of Flowers National Park.
5. Nokrek Biosphere Reserve: Located in Meghalaya, known for its rich biodiversity.
6. Pachmarhi Biosphere Reserve: Situated in Madhya Pradesh, encompassing Pachmarhi and Satpura National Parks.
7. Simlipal Biosphere Reserve: Located in Odisha, known for its tiger reserve and diverse flora and fauna.
8. Achanakmar-Amarkantak Biosphere Reserve: Situated in Madhya Pradesh and Chhattisgarh, covering the Achanakmar Wildlife Sanctuary and parts of Amarkantak Plateau.
9. Great Nicobar Biosphere Reserve: Located in the Andaman and Nicobar Islands, covering the Great Nicobar Island.
10. Manas Biosphere Reserve: Situated in Assam, encompassing the Manas National Park and parts of Bhutan.
11. Sunderbans Biosphere Reserve: Located in West Bengal, covering the Indian part of the Sunderbans delta region.
12. Agasthyamala Biosphere Reserve: Situated in Kerala and Tamil Nadu, known for its rich biodiversity and the Agasthyamalai Hills.
13. Khangchendzonga Biosphere Reserve: Located in Sikkim, encompassing the Khangchendzonga National Park and parts of the Himalayas.
14. Panna Biosphere Reserve: Situated in Madhya Pradesh, known for the Panna Tiger Reserve.
15. Biosphere Reserve of the Nilgiris: Located in Tamil Nadu, Kerala, and Karnataka, encompassing the Nilgiri Hills.
16. Seshachalam Hills Biosphere Reserve: Situated in Andhra Pradesh, covering the Seshachalam Hills.
17. Cold Desert Biosphere Reserve: Located in Himachal Pradesh, known for its unique cold desert ecosystem in the Trans-Himalayan region.
18. Kachchh Biosphere Reserve: Situated in Gujarat, covering the Kachchh region.

These biosphere reserves are recognized for their ecological significance, conservation efforts, and sustainable development initiatives. It's important to note that the status of biosphere reserves may change over time, and new reserves may be added. Therefore, it's advisable to refer to the latest information from official sources for the most up-to-date list of biosphere reserves in India.