Previous year MCQs

Environment & Ecology UPPSC 2022 GS-I
Question

With reference to ecological niche, which of the following statements is/are correct?

1. It represents the range of conditions that it can tolerate the resources it utilizes and its functional role in ecological system.
2. Each species has a distinct niche.

Select the correct answer from the code given below :
Code:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Both 1 and 2

Detailed Solution:

The correct answer is “Both 1 and 2”.
An ecological niche refers to the specific role or function of a species within an ecosystem, including the range of conditions it can tolerate (abiotic factors), the resources it utilizes (like food and habitat), and its interactions with other species.

Each species has a distinct niche, which helps to minimize competition with other species by occupying a unique space and fulfilling a specific role within the ecosystem.

Similar Questions:

Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) -

Assertion (A) - Population control is necessary to maintain the environment of the country.
Reason (R) - Due to the rapid increase in population, the environmental balance is maintained.

Select the correct answer using the code given below—
Code -
  1. A) Both (A) and (R) are true and (R) is correct explanation of (A)
  2. B) Both (A) and (R) are true but (R) is not correct explanation of (A)
  3. C) (A) is true but (R) is false
  4. D) (A)is false but (R )is true
Who has propounded the concept of 'Limit to Growth'?
  1. A) Club of Rome
  2. B) UNESCO
  3. C) Brundtland Commission
  4. D) Agenda 21
On which date "Uttar Pradesh Day" is celebrated ?
  1. A) 26 January
  2. B) 25 January
  3. C) 24 January
  4. D) 23 January
The atmosphere of Saturn contains which one of the following gas in large quantity ?
  1. A) Sulphur dioxide
  2. B) Carbon monoxide
  3. C) Methane
  4. D) Nitrogen
Given below are two statements, one is labeled as Assertion (A) and the other as Reason (R).

Assertion (A) : Agra and Darjeeling are located on the same latitude but temperature of January in Agra is 16° Centigrade whereas it is only 4° Centigrade in Darjeeling.
Reason (R) : Temperature decreases with height and due to thin air, places in the mountains are cooler than places in the plains.

Select the correct answer from the code given below:

Code:
  1. A) (A) is false but (R) is true
  2. B) (A) is true but (R) is false
  3. C) Both (A) and (R) are true but (R) is not the correct explanation of (A)
  4. D) Both (A) and (R) are true and (R) is the correct explanation of (A)
Which one of the following pairs is NOT correctly matched ?State – Members in the Legislative Assembly
  1. A) Manipur – 62
  2. B) Goa – 40
  3. C) Uttar Pradesh – 403
  4. D) Uttarakhand – 70
'Eco Mark’ is given to the Indian products that are
  1. A) Pure and unadulterated
  2. B) Rich in proteins
  3. C) Environment friendly
  4. D) Economically viable
The UNESCO has given international recognition to

A) Nilgiri Biosphere
B) Nanda Devi Biosphere
C) Manas Biosphere
D) Simlipal Biosphere

Select the correct answer from the following code:
Codes:
  1. A) 1 and 2
  2. B) 2 and 4
  3. C) 1, 2 and 4
  4. D) 1, 2, 3, 4
While India's Human population is growing at an astounding pace, the bird population is shrinking fastly mainly because:

1. there has been an abnormal increase in the number of hunters.
2. bio-pesticides and organic manure are being used on an large scale.
3. there has been a large scale reduction in the habitats of the birds.
4. there has been a large scale used of pesticides, chemical fertilizers and mosquito repellents.

Select your answer correctly using the codes given below:
Codes:
  1. A) 1 and 2 are correct
  2. B) 2 and 3 are correct
  3. C) 3 and 4 are correct
  4. D) 1 and 4 are correct
Which Indian player has won the Gold Medal in Men's 200 meters. Butterfly Swimming Event held in Copenhagen in April 2022 ?
  1. A) Sandeep Sejwal
  2. B) Sajan Prakash
  3. C) Sri Hari Natraj
  4. D) Sakshi Balkrishnan
Which of the following statements about Radioactive pollution are correct?

1. It causes hereditary change in the animals.
2. It causes dis-balance among different minerals in the soil.
3. It hinders blood circulation.
4. It causes carcinogenesis.

Select the correct answer from the codes given below:
Codes:
  1. A) 1 and 2
  2. B) 1 and 4
  3. C) 1, 3 and 4
  4. D) 2, 3 and 4
Assertion (A): Increase in the diversity of food webs promotes ecosystem stability.
Reason (R): It increases the resilience of the ecosystem.
  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