Environment, Ecology & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
51. Recently a phrase “Anthropocene defaunation” was making news. Which among the following is correct meaning of this phrase?
[A] A mass extinction that is primarily induced by human activity
[B] Loss and decline of biodiversity in particular biome due to human activity
[C] Deforestation and degradation of environment
[D] None of the above
Show Answer
Correct Answer: A [A mass extinction that is primarily induced by human activity]
52. Consider the following about Convention on Biodiversity 1.It came up at the 1992 Earth Summit in Rio de Janeiro. 2.India submitted its seventh National Report to the Convention on Biological Diversity. Which one is true?
[A] 1only
[B] 2 only
[C] Both 1 and 2
[D] None of the above
Show Answer
Correct Answer: A [ 1only ]
Notes:
One of the key agreements adopted at Rio 1992 was the Convention on Biological Diversity. India recently submitted its Sixth National Report to the Convention on Biological Diversity. India is among the first five countries in the world, the first in Asia and the first among the biodiversity-rich mega diverse countries to have submitted the report.
53. Choose the wrong statements about Ultima Thule. 1.Ultima Thule is located in the Kuiper belt beyond the orbit of Uranus. 2.Ultima Thule belongs to a class of Kuiper belt objects called the “hot classicals”.
[A] 1 only
[B] 2 only
[C] Both 1 and 2
[D] None of the above
Show Answer
Correct Answer: C [ Both 1 and 2 ]
Notes:
Ultima Thule is located in the Kuiper belt in the outermost regions of the Solar System, beyond the orbit of Neptune. Ultima Thule belongs to a class of Kuiper belt objects called the “cold classicals”, which have nearly circular orbits with low inclinations to the solar plane.
54. Which of the following is true about Commensalism biotic interaction?
[A] One species is benefited and the other is unaffected
[B] Both the species benefits
[C] Both the species are harmed
[D] One specie is harmed and other is unaffected
Show Answer
Correct Answer: A [One species is benefited and the other is unaffected]
Notes:
Commensalism is a form of biotic interaction in which one specie is benefitted while the other is unaffected. Example- Cow dung providing the shelter to the dung beetles.
55. These forests are categorized by the moderate climate, trees having particular leaves shedding season, podozolic soil and fairly uniform rainfall. Which among the following is that type of forest?
[A] Tropical Deciduous
[B] Temperate Deciduous
[C] Tropical Rainforest
[D] Boreal forest
Show Answer
Correct Answer: B [Temperate Deciduous]
Notes:
The Temperate Deciduous forests are characterized by moderate climate, broad leaf deciduous trees, trees having particular shedding season. The rainfall is fairly uniform and soil is podozolic.
56. Which of the following can can categorised as the point source of water pollution?
- Oil spill in sea form ship
- Discharge from houses connected to public sewerage system
- Drains
- Nuclear Reactors
Select the correct answer form the codes given below-
[A] 1,2,3,4
[B] 1,3 and 4 only
[C] 1, 2 and 4 only
[D] 1,2 and 3 only
Show Answer
Correct Answer: B [1,3 and 4 only]
Notes:
Point sources of water pollution are those sources which are identifiable and thus easily controlled. Since drains, oil spill from ships and release form nuclear reactor can be easily identified so they are point source of water pollution.
57. Where in India the Tropical Wet Evergreen forests are not found?
[A] North East Region
[B] Western and eastern Ghats
[C] Andaman and Nicobar island
[D] Deccan Plateau
Show Answer
Correct Answer: D [Deccan Plateau]
Notes:
Tropical wet evergreen forests are found in areas of high rainfall. They are found in north- east region, Western and eastern ghats and north east region.
58. Which of the following is not one of the tiger range countries?
- Bangladesh
- Combodia
- India
- Maldives
- Myanmar
Select the correct answer from the codes given below
[A] 1 and 2 only
[B] 3 and 4 only
[C] 4 only
[D] 4 and 5 only
Show Answer
Correct Answer: C [4 only]
Notes:
There are 13 tiger range countries which are- Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Lao PDR, Malaysia, Myanmar, Nepal, Russia, Thailand and Viet Nam.
59. Which of the following best describes the endemic species?
[A] Species which are found over a large area
[B] Species which are restricted to a small area
[C] Species which are found in alpine region
[D] None of the above
Show Answer
Correct Answer: B [Species which are restricted to a small area]
Notes:
Endemic Species are those species which are found in restricted areas or in a small region.
60. Which of the following is true about Gamma diversity?
[A] It is the species diversity found in a local area
[B] It is the species diversity between two communities
[C] It is the species diversity found in an ecosystem
[D] None of the above is true
Show Answer
Correct Answer: C [It is the species diversity found in an ecosystem]
Notes:
Gamma diversity is the ecological diversity found among more than two ecological communities.
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