Previous year MCQs

Environment & Ecology UPPSC 2023 GS-I
Question

Which of the following factor is the most important factor for the lost of biodiversity?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Destruction of natural habitat

Detailed Solution:

The correct answer is “Destruction of natural habitat”.
Destruction of natural habitat is the most significant factor contributing to the loss of biodiversity.
When habitats are destroyed or altered due to human activities such as deforestation, urbanization, and agriculture, the species that depend on those habitats are put at risk, leading to declines in their populations and overall biodiversity loss.

Similar Questions:

The main objective of sustainable tourism is:
  1. A) To increase the number of tourists
  2. B) To manage mass scale tourism and small scale travel
  3. C) To manage tourism and environment while maintaining cultural integrity and ecological processes
  4. D) None of the above
With reference to Eutrophication, which of the following statement(s) is/are correct ?

1) It decreases dissolved oxygen of water.
2) It is a phenomenon of nutrient enrichment of a water body.

Select the correct answer from the codes given below.
  1. A) 1 only
  2. B) 2 only
  3. C) Both 1 and 2
  4. D) Neither 1 nor 2
The gas, which is emitted in the paddy fields and increases the earth's temperature is
  1. A) Nitrogen
  2. B) Carbon dioxide
  3. C) Carbon monoxide
  4. D) Methane
Which one of the following is NOT a major cause of Wildlife Extinction ?
  1. A) Loss of natural habitat
  2. B) To make fire in the forest
  3. C) Illegal commercial trade of wildlife
  4. D) Fast pace of population growth
In December, 2022 New Zealand passed the world's first Law to ban smoking for next generation. New Zealand's goal is to be "smoke-free" by
  1. A) 2024
  2. B) 2025
  3. C) 2030
  4. D) 2035
Match list-I with list-Il and select the correct answer using the code given below the lists:
List — I - List — II

(A) Mirat-e-Sikandari - (1) History of Bengal
(B) Burhan-e-Masir - (2) History of Bahmani's Ahmad Nagar
(C) Riyaz-us-Salatin - (3) Collection of Mahmood Gawan's letters
(D) Riyaz-ul-insha - (4) Victory of Gujarat
Code -
  1. A) A-(4), B-(2), c-(1), D-(3)
  2. B) A-(2), B-(4), C-(1), D-(3)
  3. C) A-(1), B-(2), C-(4), D-(3)
  4. D) A-(4), B-(2), C-(3), D-(1)
Which among the following organisations was responsible for throwing a bomb at Viceroy Lord Hardinge in Delhi?
  1. A) All India Labour Association
  2. B) United Patriotic Association
  3. C) Anushilan Samiti
  4. D) Yugantar
Where was the "Sudarshan Prahar" Army Exercise carried out in December, 2022?
  1. A) Gujarat
  2. B) Uttar Pradesh
  3. C) Rajasthan
  4. D) Madhya Pradesh
Which one of the following is the largest ecosystem of the world ?
  1. A) Ocean
  2. B) Grassland
  3. C) Forest
  4. D) Mountains
Who was the leader of rebellion in Bareilly, Uttar Pradesh during 1857?
  1. A) Hazarat Mahal
  2. B) Khan Bahadur Khan
  3. C) Kunwar Singh
  4. D) Nana Saheb
A BOD in a water body, the excess of BOD indicates that its water is:
  1. A) Gaining minerals
  2. B) Getting gaseous
  3. C) Is polluted with sewage
  4. D) Atrophic
The size of the Respirable Suspended Particulate Matter [R.S.P.M] in the air is:
  1. A) more than 7 µm [microne]
  2. B) more than 6 µm [microne]
  3. C) more than 5 µm [microne]
  4. D) less than 5 µm [microne]