Previous year MCQs

Environment & Ecology UPPSC 2015 GS-I
Question

Which of the following is a correct statement?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Energy flow in the biospheric ecosystem is unidirectional.

Detailed Solution:

The correct answer is “Energy flow in the biospheric ecosystem is unidirectional.”.
In an ecosystem, energy flow is unidirectional, meaning it primarily moves in one direction, from the sun to producers (plants and photosynthetic organisms) and then through various trophic levels.

Similar Questions:

How many companies are included in BSE-GREENEX?
  1. A) 25
  2. B) 40
  3. C) 50
  4. D) 100
The concept of ecological niche was enunciated by
  1. A) Greenels
  2. B) Darwin
  3. C) E.P.Odum
  4. D) C.C.Park
Which of the following segments of population is not included in the scheme of inclusive developments?
  1. A) Marginal farmers
  2. B) Landless agricultural labours
  3. C) Scheduled Castes/ Scheduled Tribes
  4. D) People living in semi-urban areas.
Which one of the following cases outlined the basic structure doctrine of the Indian Constitution?
  1. A) Gopalan v/s Madras State
  2. B) Golaknath v/s Punjab State
  3. C) Keshava Nand Bharti v/s Kerala State
  4. D) None of these
The first National Park established in India is:
  1. A) Namdapha National Park
  2. B) Corbett National Park
  3. C) Dudhwa National Park
  4. D) Guinady National Park
Which among the following is the largest mechanized mine in India?
  1. A) Ratnagiri mine
  2. B) Jaipur mine
  3. C) Sundergarh mine
  4. D) Bailadila mine
Which were the main objectives of National Forest Policy? Select the correct answer using the code given below:

1. To ensure ecological balance
2. To promote social forestry
3. To bring one-third of the total area of the country under the forest cover
4. To encourage mass community participation in forest management

Code:
  1. A) 1 and 2
  2. B) 1 and 3
  3. C) 1 and 4
  4. D) 2 and 3
Which of the following is a correct statement?
  1. A) Energy flow in the biospheric ecosystem is unidirectional.
  2. B) Energy flow in the biospheric ecosystem is cyclic.
  3. C) Relative loss of energy in natural ecosystem decreases with increasing trophic levels.
  4. D) Species at progressively higher tropic levels appear to be less efficient in using available energy.
If a human disease breaks out across a large region of the world, what is it called?
  1. A) Pandemic
  2. B) Epidemic
  3. C) Endemic
  4. D) Epizootic
Which of the following Acts provides for protection to wild animals in India?
  1. A) Wildlife Protection Act 1972
  2. B) Forests Protection Act, 1982
  3. C) Environment Protection Act, 1996
  4. D) West Bengal Wild Animal Protection Act, 1959
Normal temperature of human body is 98.4°F. Its equivalent temperature in °C is:
  1. A) 40.16
  2. B) 36.89
  3. C) 35.72
  4. D) 32.36
Methane gas producing field is:
  1. A) Wheat field
  2. B) Paddy field
  3. C) Cotton field
  4. D) Groundnut field