Answer: A

Explanation:

A wetland is a land area that is saturated with water, either permanently or seasonally, such that it takes on the characteristics of a distinct ecosystem. Wetlands consist primarily of hydric soil, which supports aquatic plants. Hence, statement 1 is correct.

In 1981, Chilika Lake was designated the first Indian wetland of international importance under the Ramsar Convention. Ashtamudi Lake in the Kollam District of Kerala, is the second largest and deepest wetland ecosystem. This was included in the list of wetlands of international importance, as defined by the Ramsar Convention on 19th august, 2002. Hence, statement 2 is not correct.

Answer: B

Explanation:

Zebra and black buck are not adopted to desert condition while Kangaroo rat, horned toad and camel are adopted to desert condition.

Answer: D

Explanation:

CO2 is meteorologically a very impartant gas as it is transparent to the incoming solar radiation but opaque to the outgoing terrestrial radiation. It absorbs a part of terrestrial radiation and reflects back some part of it towards the earth's surface. Ozone is another important component of atmosphere found between 10 and 50 km above the earth's surface and acts as a filter and absords the UV rays radiating from the sun. Water vapour is also a variable gas in the atmosphere, which decrease with altitude. It also absorbs part of the insolation from the sun and preserves the earth's radiated heat. It thus, acts like a blanket allowing the earth neither to become too cold nor too hot. Water vapour also contributes to the stability and instability in the air. Hence, all statements are correct.

Answer: A

Explanation:

Ecosystems are of two major types: terrestrial and equatic. Terrestrial ecosystem can further be classified into 'biomes'. A biome is a plant and animal community that covers a large geographical area. The boundaries of different biomes on land are determined mainly by climate. Therefore, a biome can be defined as the total assemblage of plant and animal species interacting within specific conditions. These include rainfall, temperature, humidity and soil conditions. Some of the major biomes of the world are: forest grassland, desert and tundra biomes. Hence, option (a) is correct.

Answer: C

Explanation:

Except wildlife sanctuaries all are example of ex-situ conservation. Wildlife sanctuaries belong to In-Situ conservation with National Parks, Biosphere reserve, world heritage sites, cultural landscape etc.