Previous year MCQs

Environment & Ecology UPPSC 2001 GS-I
Question

Assertion (A): Increase in the diversity of food webs promotes ecosystem stability.
Reason (R): It increases the resilience of the ecosystem.

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Both A and R are true and R is the correct explanation of A

Detailed Solution:

The correct answer is “Both A and R are true and R is the correct explanation of A”.
Both Assertion (A) and Reason (R) are true.

A diverse food web means there are multiple species fulfilling similar ecological roles. If one species is affected by a disturbance, others can compensate, maintaining the overall ecosystem function. This is exactly what resilience means - the ability of an ecosystem to recover from disturbances.

Similar Questions:

As per the budget 2001-02 the current fiscal Deficit of India is:
  1. A) 4.7%
  2. B) 5.1%
  3. C) 5.5%
  4. D) 6.1%
Of the following who was not a signatory to the historic Poona Pact of 1932?
  1. A) B.R. Ambedkar
  2. B) Madan Mohan Malviya
  3. C) C. Rajagopalachari
  4. D) M.K.Gandhi
The father of "ecology" is:
  1. A) Ernst Haeckel
  2. B) Charles Darwin
  3. C) A.H. Strahler
  4. D) E.P. Odum
Consider the following statements:

1. Fibre optics is based on the principle of total internal reflection.
2. In optical fibre communication system power consumption is extremely low.
3. Optical fibre communications are free from radio frequency interference.
4. In India, Reliance group of Industries is engaged in the manufacture of optical fibre.

Of these statements:
  1. A) 1, 2 and 3 are correct
  2. B) 1, 2 and 4 are correct
  3. C) 1, 3 and 4 are correct
  4. D) 2, 3 and 4 are correct
The concept of ecosystem was enunciated by:
  1. A) A. G. Tansley
  2. B) Charles Darwin
  3. C) C.C. Park
  4. D) E. P. Odum
Which one of the following is correctly matched?
List-I - List-II
  1. A) Mahatma Gandhi - The Law and the Lawyers
  2. B) Ram Manohar Lohiya - India Divided
  3. C) Dr. Rajendra Prasad - Guilty Men of India's Partition
  4. D) Abdul Kalam Azad - Ghubar-e-Khatir
Which one of the following statements is true for synecology?
  1. A) It is study of individual species in relation to its environment
  2. B) It is a study of complex inter-relationship of biotic communities
  3. C) It is essentially habitat ecology
  4. D) It is mainly social ecology
The total fertility rate in India is the highest in:
  1. A) Andhra Pradesh
  2. B) Bihar
  3. C) Tamil Nadu
  4. D) Uttar Pradesh
Which of the following statements are true for bionomics? Select the correct answer from the codes given below:

A. It literally means 'management of life'
B. It is a synonym for ecology
C. It stresses on the value of natural system which influence human systems

Codes:
  1. A) A is correct
  2. B) A and B are correct
  3. C) B and C are correct
  4. D) All are correct
Which of the following represents the average increase in earth's temperature during the last century?
  1. A) 0.6 degree Celsius
  2. B) 0.7 degree Celsius
  3. C) 0.8 degree Celsius
  4. D) 0.9 degree Celsius
Which of the following set is different from others:
  1. A) 11,3,3,17
  2. B) 41,5,3,47
  3. C) 71,7,3,17
  4. D) 37, 14,18,7
Biotechnology Park is located at:
  1. A) Lucknow
  2. B) Varanasi
  3. C) Agra
  4. D) None of the above