Match mean annual precipitation in Column I with the biome in Column II and choose the right option.

• 1 - D; 2 - C; 3 - A; 4 - B

• 1 - C; 2 - A; 3 - B; 4 - D

• 1 - C; 2 - D; 3 - A; 4 - B

• 1 - B; 2 - D; 3 - A; 4 - C

• 1 - B; 2 - D; 3 - A; 4 - C

The asscoiation that includes herbivores and phytophagous insects is called

• Competition

• Parasitism

• Predation

• Commensalism

• Commensalism

The figure below is the diagrammatic representation relative contribution of various greenhouse gases to total global warming. What do (a), (b), (c) and (d) represent respectively?

• A - Carbon dioxide; B - Methane; C - CFCs; D - N₂O

• A - Carbon dioxide; B - CFClC; C - Methane; D - N₂O

• A - Carbon dioxide; B - N₂O ; C - CFClC; D - Methane

• A - Carbon dioxide; B - Methane; C - N₂O ; D - CFCs

• A - Carbon dioxide; B - Methane; C - N₂O ; D - CFCs

The Montreal Protocol (1987) refers to

• Presistent organic pollutants

• Global warming and climatic changes

• Biosafety of genetically modified organisms

• Controlling the emission of ozone depleting substances

• Controlling the emission of ozone depleting substances

Organisms that tolerate narrow range of salinity are

• Euryhaline

• Stenohaline

• Eurythermal

• Hypersaline

• Hypersaline

The gross primary productivity of an ecosystem is 170 tons organic matter and amount used in respiration is 50 tons. Calculate the net primary productivity of the ecosystem.

• 120 tons

• 100 tons

• 70 tons

• 12 tons

• 12 tons

The number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration is known as

• Emigration

• Mortality

• Natality

• Immigration

• Immigration

78.

Match the environmental activist in Column I with the environmental issue in Column II and choose the right option

Column I	Column II
1. Ramesh Chandra Dagar	A. Conservation od forests
2. Ahmed Khan	B. Organic farming
3. Amrita Devi	C. Plastic waste recycling.

• 1 - B; 2 - C; 3 - A

• 1 - C; 2 - A; 3 - B

• 1 - A; 2 - B; 3 - C

• 1 - B; 2 - A; 3 - C

• 1 - B; 2 - A; 3 - C

The pioneer species in xerarch and hydrarch succession are respectively

• Lichens and sedges

• Phytoplanktons and sedges

• Lichens and zooplanktons

• Lichens and phytoplanktons

• Lichens and phytoplanktons

Match the items in Column I with their uses in Column II and choose the right option.

• A - 3; B - 4; C - 1; D - 2

• A - 2; B - 1; C - 4; D - 3

• A - 4; B - 1; C - 2; D - 3

• A - 1; B - 4; C - 2; D - 3

• A - 1; B - 4; C - 2; D - 3