Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. The India Tsunami Warning centre is located at which of the following places?
[A] Chennai
[B] Hyderabad
[C] Goa
[D] Mumbai
Show Answer
Correct Answer: B [Hyderabad]
Notes:
The Indian Tsunami Early Warning System popularly called as ITEWS was established under the responsibility of The Ministry of Earth Sciences. The Indian Tsunami Early Warning System was established in 2007 and is located in Hyderabad.
42. Apart from Sundari trees, which other plants can also be seen in Mangrove forest?
[A] Asparagus
[B] Bamboo
[C] Dhundal
[D] All of the above
Show Answer
Correct Answer: C [Dhundal]
Notes:
Littoral and Swamp Forests or the Mangrove Forests mostly contain sundari mangrove trees. The other main
species found in these forests are
casuarina trees, goran, gnewa, baen,
dhundal, etc.
43. Which of the following is an air pollutant?
I. Water vapour
II. Carbon dioxide
III. Hydrogen Gas
[A] Only I
[B] Only II
[C] Only III
[D] Both II and III
Show Answer
Correct Answer: B [Only II]
Notes:
An air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. Because of its role as a greenhouse gas Carbon dioxide (CO2) has been described as “the leading pollutant” and “the worst climate pollution”. Other examples include carbon monoxide gas from motor vehicle exhaust, or the Sulphur dioxide released from factories.
44. The primary producer in an ecosystem are ____:
[A] Women
[B] Men
[C] Plants
[D] Bacteria
Show Answer
Correct Answer: C [Plants]
Notes:
Primary producers are the organisms in an ecosystem that produce biomass from inorganic compounds (autotrophs). In almost all cases, these are photosynthetically active organisms (plants, cyanobacteria and a number of other unicellular organism.
45. Absence of fish along a river indicates _____:
[A] Zone of active decomposition
[B] Zone of degradation
[C] Zone of recovery
[D] All zones of pollution
Show Answer
Correct Answer: B [Zone of degradation]
Notes:
Absence of fish along a river indicates zone of degradation. This zone is found for a certain length just below the point where sewage is discharged into the river-stream. This zone is characterised by water becoming dark and turbine with formation of sludge deposits at the bottom. D.O is reduced to about 40% of the saturated value.
46. The potential for air pollution typically increases when the ventilation coefficient is which of the following?
[A] Greater than 11,000 m2/s
[B] Greater than 7,600 m2/s
[C] Less than 3,600 m2/s
[D] Less than 6,000 m2/s
Show Answer
Correct Answer: D [Less than 6,000 m2/s]
Notes:
The ventilation coefficient (m2/s) is a product of maximum mixing depth and average wind speed. It is used as an indicator of the atmosphere’s dispersive capability. High potential for air pollution is generally associated with ventilation coefficient values of less than 6000 m2/s, as established by researchers Portelli and Lewis in 1987.
47. Which country is separated from India by a narrow channel of sea formed by Palk Strait and the Gulf of Mannar?
[A] Sri Lanka
[B] Bangladesh
[C] Pakistan
[D] Myanmar
Show Answer
Correct Answer: A [Sri Lanka]
Notes:
Sri Lanka is separated from the mainland portion of the Indian subcontinent by the Gulf of Mannar and Palk Strait. It is an island country in South Asia, located southeast of India and northeast of the Maldives.
48. The Tamil Nadu coast gets a large portion of its total rain during _____:
[A] March to June
[B] June to September
[C] November to February
[D] October to November
Show Answer
Correct Answer: D [October to November]
Notes:
The coast of Tamil Nadu (Coromandal coast) receives most of its annual rainfall from the retreating monsoon during October-December. This rainy extension of the generally dry retreating monsoon is called the northeast, or winter, monsoon. It is in contrast to the south west monsoon that brings rainfall over the Northern plains and eastern India during July-September.
49. Which of the following is a National Park, Wildlife Sanctuary, UNESCO Natural World Heritage site, Project Tiger Reserve, Elephant Reserve as well as a Biosphere Reserve?
[A] Bandipur
[B] Gir
[C] Manas
[D] Rohla
Show Answer
Correct Answer: C [Manas ]
Notes:
- Bandipur National Park, established in 1973 as a tiger reserve under Project Tiger, is a national park located in the south Indian state of Karnataka.
- The Gir Forest National Park and Wildlife Sanctuary is a forest and wildlife sanctuary in Gujarat.
- Manas National Park or Manas Wildlife Sanctuary is a Wildlife Sanctuary, UNESCO Natural World Heritage site, a Project Tiger Reserve, an Elephant Reserve and a Biosphere Reserve in Assam.
- Rohla National Park in Kulu, Himachal Pradesh, is known for snow leopards.
50. Gondwana Rainforests are found in which country?
[A] Australia
[B] Brazil
[C] India
[D] South Africa
Show Answer
Correct Answer: A [Australia]
Notes:
The Gondwana Rainforests, designated as a World Heritage Site, are located in southeast Queensland and northeast New South Wales in Australia. They personify extraordinary instances of Earth’s evolutionary phases, with over 50 sheltered areas playing host to more than 200 rare or endangered species. These rainforests are remnants from the ancient supercontinent Gondwana, evident through tree lineages such as Red and Yellow Carabeen. Unfortunately, they are threatened by climate change and provide important habitats for scarce species like the Hastings River Mouse and Parma Wallaby. Drawing around 2 million tourists each year, these vast rainforests cover an impressive 366,500 hectares.