Information about 3 national parks :
1. Corbett National Park
India's first national park, Corbett was established in 1936 by legendary tiger hunter Jim Corbett. It's located in Uttarakhand, around three hours from Nainital and seven hours from Delhi. The park is a large one and has five zones. One zone, Jhirna, is open all year round. The rest of the park closes during the monsoon. The chances of seeing a tiger at Corbett aren't great but there are plenty of other animals, and elephant safaris are possible. For the best wildlife viewing, stay deep in the reserve in the Dhikala zone. However, if you're a foreigner be prepared to pay at least double the rates for accommodation, with the cheapest rates around 3,000 rupees a night for a private cabin at a forest rest house. It is costly!
2. Sunderbans National Park
Sunderbans, in West Bengal, is a magnificent tangle of mangrove jungle that's the only one of its kind in the world. It's spread over 54 islands and extends into neighboring Bangladesh. The Sundarbans is only accessible by boat and exploring it this way is a thrilling experience that shouldn't be missed. Don't be hopeful of seeing any tigers though. They're very shy and usually remain well hidden in the reserve.
3. Bandhavgarh National Park
Bandhavgarh, also in Madhya Pradesh, is best known for its spectacular setting, as well as having the highest concentration of tigers in any park in India. The park features dense green valleys and rocky hill terrain, with an ancient fort built on 800 meter (2,624 ft) high cliffs. Although it's relatively difficult to reach, this park offers the best chance of seeing tigers. However, it's one of the most expensive national parks to visit.
I AM SORRY, I DON'T KNOW ABOUT THE BIOSPHERE RESERVES....... ;(
HOPE MY ANSWER MAY HELP YOU..... ^.^