Three environmental problems of the Sunderbans are- imbalance in the numbers of prey and predators destruction of mangrove plants due to urbanisation rising sea level Analyse the probable effects of the three problems. Mention the location and the name of one endangered species of a biodiversity hotspot distributed in and outside the geographical area of India. [3+2=5] OR Describe the nitrogen cycle with the help of a word diagram. Analyse any two problems which may arise if the nitrogen cycle is disturbed. [3+2=5]

Write one role of Joint Forest Management (JFM) and People's Biodiversity Register (PBR) each for the conservation of biodiversity.

Write the names of one endangered plant and one endangered animal species of the Eastern Himalayas biodiversity hotspot.

The invasion of exotic species causes a reduction in biodiversity. Establish the validity of this statement with two examples with reference to India.

Which aspect is the most emphasized in Project Crocodile launched for crocodile conservation?

Which types of in-situ conservation are Gorumara, Nilgiri and Kulik respectively? (a) National Park, Biosphere Reserve, Sanctuary (b) Biosphere Reserve, Sanctuary, National Park (c) Sanctuary, National Park, Biosphere Reserve (d) Biosphere Reserve, National Park, National Park

Write one feature of a biodiversity hotspot.

Nilgiri and ____ are both Biosphere Reserves.

Among the following four terms, one includes the other three; find it out and write it:

One of the environmental problems of Sunderbans is imbalance in prey - predator number — Justify the validity of the statement with three examples. What are the roles of biosphere reserve and sanctuary in the conservation of biodiversity ? [3+2=5] OR What are the causes for the endangeredness of the following wild animals ? [3+2=5] Royal Bengal Tiger One-horned Rhinoceros Lion What are the two effects of air pollution on human health ?

Explain the following three problems related to ever-increasing human population- Over-exploitation and depletion of natural resourcese Changes in atmospheric condition and global warming Deforestation and loss of ecosystems Two major causes behind the loss of biodiversity are over-exploitation and destruction of habitat due to change in land use pattern - establish the validity of the statement with proper example. [3+2=5] Or What might be the reasons behind the disturbances in Nitrogen Cycle ? It is very much essential to publish a PBR document for each village of India — which information can be gathered from a PBR regarding biodiversity ? [3+2=5]

'Scarcity of food and poaching are two main reasons behind the endangeredness of a mammal found in Eastern Himalayas biodiversity hotspot' - Justify the validity of the statement.