Question : Which one of the following is the correct sequence of ecosystem in the order of decreasing productivity?

Option 1: Oceans, mangroves, lakes, grasslands

Option 2: Mangroves, oceans, grassland, lakes

Option 3: Oceans, lakes, grassland, mangroves

Option 4: Mangroves, grasslands, lakes, oceans

Question : The land of maximum biodiversity is

Option 1: Tropical 

Option 2: Temperate

Option 3: Monsoonal 

Option 4: Equatorial

Question : A tropical deciduous plant special to the Deccan Plateau is

Option 1: teak

Option 2: shisham

Option 3: sandalwood

Option 4: sal

Question : Which one of the following hormones is called called "Emergency Hormone"?

Option 1: Adrenaline

Option 2: Thyroxine

Option 3: Vasopressin

Option 4: Insulin

Question : The typical natural vegetation above 3600 metres on the Himalaya is 

Option 1: Alpine grassland

Option 2: alpine forests

Option 3: coniferous forests

Option 4: subtropical pine forests