ENVIRONMENT FOR UPSC PRELIMS 2020 , TEST-32

Q 1 . Which of the following are the physical processes responsible for the formation of Estuaries?
1) Rising sea level
2) Movement of sand and sandbars
3) Glacial processes
4) Tectonic processes
Select the appropriate code:
a) All of the above
b) 1 and 4 only
c) 1, 3 and 4 only
d) 1, 2 and 4 only

Q 2 . The entire component of species of organism plants and animals, found within a given region is called
a) Biota
b) Niche
c) Community
d) Habitat

Q 3 . Hemlock, red pine, oak & beech are major tree species of which of the following biome?
a) Mediterranean
b) Temperate Biome
c) Tropical evergreen biome
d) None

Q 4 . Competition for light, nutrients and space is most severe between:
a) Closely related organisms growing in different Niches
b) Closely related organisms growing in same niche
c) Distantly related organisms growing in the same habitat
d) Distantly related organisms growing in different niches

Q 5 . Which of the following pyramids are upright in grassland ecosystems?
1. Pyramid of numbers
2. Energy Pyramid
Select the code from below:
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Q 6 . Which of the following metal poisoning may be caused due to eating in silver wares
a) Silver poisoning
b) Lead poisoning
c) Copper poisoning
d) Arsenic poisoning

Q 7 . Consider the following statements:
Assertion (A): The coral reefs are called as rainforests of the oceans.
Reason (R): The coral reefs are more diverse than the tropical rainforests because the coral reefs have about 1,000,000 species
Choose the correct answer:
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true

Q 8 . Which among the following statement(s) is/are not true in regard to coral bleaching?
1) Coral bleaching refers to loss of algae from the corals resulting in the white colour of corals which is indicative of death of corals.
2) Siltation has been reported as the major factor of coral bleaching.
3) El Nino phenomenon also contributes to coral bleaching.
Select the correct code:
a) 1 only
b) 2 only
c) 3 only
d) None

Q 9 . Consider the following statements regarding ‘Peatlands’
1. All wetlands include peat
2. Peatlands act as huge source of carbon
3. Peatlands regulate regional and local climate
Select the correct statement/s
a) Only 1
b) 1 and 2
c) 1, 2 and 3
d) 2 and 3

Q 10 . Which among the following form part of an Inland wetland?
1. Flood Plains
2. Swamps
3. Seagrass Meadows
4. Aquifers
5. Estuaries
6. Marshes
7. Coral Reefs
Select the correct option
a) 1, 2, 3, 6 and 7
b) 2, 3, 4, 5 and 6
c) 1, 2, 4 and 6
d) 1, 2 and 5