Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. Which of the following represents the correct percentage increase of Carbon dioxide in the atmosphere since pre-industrial times?
[A] 15%
[B] 20%
[C] 25%
[D] 30%
Show Answer
Correct Answer: D [30%]
Notes:
Carbon dioxide is one of the most important of Earth’s long-lived greenhouse gases. The carbon dioxide in the atmosphere has increased by about 30% since pre-industrial times. Some of the main reasons are Human activities, industrialization, and population growth.
42. Which of the following is/are the impact of Climate change on Agriculture and food security?
1) Climate Change can affect crop yield
2) Arable land along the coastlines will be reduced as a result of rising sea levels.
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Climate change poses a great threat to Agriculture and food security as Climate Change can affect crop yield as well as the types
of crops that can be grown in certain areas. It can also affect the Arable land present along the coastlines as the land will be reduced as a result of rising sea levels.
43. Which of the following statements are correct regarding Emission trading?
1. It is also known as carbon credit.
2. Carbon credits can be acquired through various means such as afforestation, renewable energy, CO2 sequestration, methane capture, buying from an exchange (carbon credits trading) etc.
3. One carbon credit is equivalent to one tonne of carbon dioxide emitted.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
Emission trading is also known as carbon credit. Carbon credits can be acquired through various means such as afforestation, renewable energy, CO2 sequestration, methane capture, buying from an exchange (carbon credits trading) etc. One carbon credit is equivalent to one tonne of carbon dioxide emitted.
44. Which is the only country in the world that forms the habitat of the “Reunion cuckooshrike”?
[A] Brazil
[B] Indonesia
[C] Australia
[D] France
Show Answer
Correct Answer: D [France]
Notes:
Reunion cuckooshrike is a passerine bird in the cuckooshrike family which is endemic to and found only in the mountain forest areas of the Reunion Island, an overseas region of France in the Indian Ocean. According to the IUCN Red List of Threatened Species, it is a “critically endangered” bird species.
45. Littoral and Swamp Forests can be seen in–
[A] Howrah
[B] Kolkata
[C] South 24 Pargana
[D] Hooghly
Show Answer
Correct Answer: C [South 24 Pargana ]
Notes:
Littoral and Swamp Forests also known as
The Mangrove Forests is found in Ganga-Brahmaputra delta (Sundarbans) i.e. in the districts of South 24
Parganas and Southern region of North 24 Parganas.
46. Which one of the following is not a major component of biotic environment?
[A] Plant
[B] Water
[C] Animals
[D] Decomposers
Show Answer
Correct Answer: B [Water]
Notes:
Water is one of the abiotic factors that are nonliving chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems. They affect living organisms in terms of growth, maintenance, and reproduction. A biotic factor is any living component that affects the population of another organism, or the environment.
47. What was the main aim of Montreal Protocol?
[A] To reduce the use of automobiles.
[B] Trading of carbon dioxide emissions.
[C] To reduce the emissions of greenhouse gases.
[D] To reduce the production of ozone destroying agents like CFCs and Halons.
Show Answer
Correct Answer: D [To reduce the production of ozone destroying agents like CFCs and Halons.]
Notes:
The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It is a protocol to the Vienna Convention for the Protection of the Ozone Layer. It entered into force on 1 January 1989.
48. To conserve coral reefs, the Government of India declared one of the following as Marine Park, that is ______:
[A] Gulf of Kutch
[B] Gulf of Mannar
[C] Andaman Islands
[D] Lakshadweep Islands
Show Answer
Correct Answer: A [Gulf of Kutch]
Notes:
For the protection of coral reefs, the Gulf of Kutch was declared Marine National Park under the provisions of the Wildlife (protection) Act, 1972. It is the first national marine park of India.
49. Gaia hypothesis is related to which of the following?
[A] Quantum Theory
[B] Living Organism
[C] Integers
[D] Origin of Earth
Show Answer
Correct Answer: B [Living Organism ]
Notes:
- The Gaia hypothesis proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating, complex system that helps to maintain and perpetuate the conditions for life on the planet.
50. The world heritage site “Atlantic Forest South-East Reserves” is located in which country?
[A] Brazil
[B] Argentina
[C] Colombia
[D] Peru
Show Answer
Correct Answer: A [Brazil]
Notes:
The Atlantic Forest South-East Reserves, a UNESCO World Heritage site, encompasses 25 protected areas spanning 4,700 km² in Brazil. It features diverse landscapes from karst mountains to coastal wetlands, showcasing exceptional scenic beauty. The site is home to over 450 tree species per hectare, with 70% of tree species, 85% of primates, and 39% of mammals being endemic. It supports 120 mammal species, including the jaguar and black-faced lion tamarin, and 350 bird species. The area contains the largest number of karst caves in Brazil and is a crucial ecological corridor for the Atlantic Forest biome. Despite being one of the most threatened biomes, the site remains a vital hub for biodiversity conservation and research.
