Statement 1 is incorrect. The Western Ghats or Sahyadri are a mountain range that covers an area of about 140,000 square kilometres in a stretch of 1,600 kilometres parallel to the western coast of the Indian peninsula, traversing the states of Kerala, Tamil Nadu, Karnataka, Goa, Maharashtra and Gujarat.

Statement 2 is correct. The Western Ghats has an exceptionally high level of biological diversity and endemism and is recognized as one of the world’s eight ‘hottest hotspots’ of biological diversity. 

Statement 3 is correct. The Western Ghats cover 5.8% of India's total landmass. These regions include some of the best representatives of non-equatorial tropical evergreen forests anywhere and are home to at least 325 globally threatened flora, fauna, bird, amphibian, reptile and fish species.

Source) Shankar IAS Environment book; Page number 131 

https://whc.unesco.org/en/list/1342/

https://en.wikipedia.org/wiki/Western_Ghats

Pair 1 is correctly matched. Naro Hills is known for its unique and varied geology and it supports a large number of ecosystems and species of Flora and Fauna. It is located in Madhya Pradesh.

Pair 2 is incorrectly matched. Purvatali Rai is located in Goa. It is a Sacred Grove.

Pair 3 is incorrectly matched. Chilkigarh Kanak Durga is located in West Bengal. Chilkigarh Kanak Durga Sacred Grove is a remnant forest with traditional beliefs and taboos of local inhabitants and rich in biodiversity covering an area of 55.9 acres in Jhargram District of West Bengal.

Pair 4 is correctly matched. Glory of Allapalli is a reserved forest being preserved as natural forest having biological, ethinical and historical values.

Source)

http://nbaindia.org/content/106/29/1/bhs.html

Statement 1 is correct. Under Section 37 of Biological Diversity Act, 2002 (BDA) the State Government in consultation with local bodies may notify in the official gazette, areas of biodiversity importance as Biodiversity Heritage Sites (BHS). This act also provides the provision on management, frame schemes for compensating or rehabilitating any person or section of people economically affected by such notification. 

Statement 2 is incorrect. The creation of BHS may not put any restriction on the prevailing practices and usages of the local communities, other than those voluntarily decided by them. The purpose is to enhance the quality of life of the local communities through this conservation measure. 

"Biodiversity Heritage Sites" (BHS) are well-defined areas that are unique, ecologically fragile ecosystems - terrestrial, coastal and inland waters and, marine having rich biodiversity comprising of any one or more of the following components: richness of wild as well as domesticated species or intra-specific categories, high endemism, presence of rare and threatened species, keystone species, species of evolutionary significance, wild ancestors of domestic/cultivated species or their varieties, past pre-eminence of biological components represented by fossil beds and having significant cultural, ethical or aesthetic values and are important for the maintenance of cultural diversity, with or without a long history of human association with them.

Source)  

http://nbaindia.org/uploaded/ut/Final BHS guidelines approved in the 19th Authority.pdf

Kawal Tiger Reserve is located in Telangana. The government of India declared Kawal wildlife sanctuary as Tiger Reserve in 2012. The reserve is the oldest sanctuary in the northern Telangana region of the state. It is well known for its abundant flora and fauna.

Source)

https://www.thehindu.com/news/national/telangana/adequate-water-to-quench-thirst-of-wild-animals-in-kawal-tiger-reserve/article30889394.ece

Pairs 1 and 2 are correctly matched. Namdapha National park is located in Arunachal Pradesh and famous for Tiger, Gaur, Wild buffalo. Dachigram National Park (J&K) is famous for Hangul and Musk deer.  Hence, pair 2 is incorrectly matched.

Source)

https://www.nios.ac.in/media/documents/SecSocSciCour/English/Lesson-11.pd

Umbrella species are those species that have either large habitat needs or other requirements whose conservation results in many other species being conserved at the ecosystem or landscape level.

Source)

https://www.biodiversitya-z.org/content/umbrella-species

Statement 1 is incorrect. A wetland is an area of land where soil is saturated with moisture either permanently or seasonally. Such areas may also be covered partially or completely by shallow pools of water. Wetlands include swamps, marshes, and bogs, among others. The water found in wetlands can be saltwater, freshwater, and brackish. 

Statement 2 is correct. In 1981, Chilika Lake was designated the first Indian wetland of international importance under the Ramsar Convention. Chilika Lake is the largest internal saltwater lake in Asia, it is a paradise on earth for bird watchers and nature lovers. The pear-shaped lake is dotted with a few small islands and has fisheries and salt pans around its shore. It is located in a distance 44 km from Puri (Odisha) and Asia's biggest inland saltwater lagoon. 

Source) 

https://www.orissatourism.org/chilika-destination-guide/

Recently, India has added 10 more wetlands to sites protected by the Ramsar Convention. The 10 new ones are Nandur Madhameshwar in Maharashtra; Keshopur-Miani, Beas Conservation Reserve and Nangal in Punjab; and Nawabganj, Parvati Agra, Saman, Samaspur, Sandi and Sarsai Nawar in Uttar Pradesh. 

The Sibsagar Lake is a made lake located at Sivasagar, Assam. It is not listed as a Ramsar site. 

Source)

https://www.thehindu.com/sci-tech/energy-and-environment/37-indian-wetlands-declared-sites-of-international-importance-under-ramsar-javadekar/article30675881.ece