Previous year MCQs

Environment & Ecology UPPSC 2013 GS-I
Question

Which of the following is the most stable ecosystem?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Ocean

Detailed Solution:

The correct answer is “Ocean”.
The most stable ecosystem among the options is the Ocean.

Oceans are generally more stable due to their vast size, depth, and the ability to buffer environmental changes, which helps maintain a more consistent climate and supports a diverse range of species.

Similar Questions:

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
Assertion (A): Deserts can be potential source for generating sustainable energy.
Reason (R): Deserts receive more energy from the sun in six hours than mankind consumes in a year.
Select The correct answer from the codes given below:
  1. A) Both (A) and (R) are true, and (R) is the correct explanation of (A).
  2. B) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
  3. C) (A) is true, but (R) is false.
  4. D) (A) is false, but (R) is true.
Which of the following has the lowest mean net primary productivity?
  1. A) Temperate forests
  2. B) Tropical forests
  3. C) Temperate grasslands
  4. D) Tropical savanna
Among the biotic components of the ecosystem, the producer system is:
  1. A) Cow
  2. B) Peacock
  3. C) Tiger
  4. D) Green Plants
The National Institute for the Mentally Handicapped is situated at
  1. A) Hyderabad
  2. B) New Delhi
  3. C) Kolkata
  4. D) Chennai
The symbol "ECOMARC" is related to which of the following ?
  1. A) Goods of best quality
  2. B) Safe goods for environment
  3. C) Exported goods
  4. D) Imported goods
Match List-I with List-II and select the correct answer by using the codes given below the lists:

List-I List-II
A) Curiosity Rover - 1) Tablet
B) Messenger - 2) Unmanned Aerial
C) Rustam-1 - 3) Mars probe space vehicle of U.S.A
D) Akash-2 - 4) Mercury probe space vehicle of NASA
  1. A) A-3 B-4 C-2 D-1
  2. B) A-4 B-3 C-2 D-1
  3. C) A-3 B-4 C-1 D-2
  4. D) A-1 B-2 C-3 D-4
Who among the following was not as allvar Saint?
  1. A) Poyagai
  2. B) Tirugyan
  3. C) Pudam
  4. D) Tirumangai
Which of the following is the correct sequence of phases of Biotic succession?
  1. A) Ecesis - Migration - Reaction - Stabilisation
  2. B) Ecesis - Migration - Stabilisation - Reaction
  3. C) Migration - Reaction - Stabilisation - Ecesis
  4. D) Migration - Ecesis - Reaction- Stabilisat
Climate change is caused by
  1. A) Green house gases
  2. B) Depletion of ozone layer
  3. C) Pollution
  4. D) All of the above
What is the aim of Pradhan Mantri Gramodaya Yojana?
  1. A) Meeting primary rural needs
  2. B) Alleviating poverty through micro enterprises
  3. C) Generating employment in rural areas
  4. D) Strengthening Panchayati Raj system in rural areas
Which one of the following is the well known example of bioindicator of air pollution?
  1. A) Lichens
  2. B) Methyl mercury
  3. C) Rose plant
  4. D) Sunflower