Previous year MCQs

Environment & Ecology UPPSC 2019 GS-I
Question

The amount fo energy during transfer from one trophic level to another in an ecosystem:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Decreases

Detailed Solution:

The correct answer is “Decreases”.
The amount of energy during transfer from one trophic level to another in an ecosystem decreases.

This is known as the 10% law, which states that only about 10% of the energy is passed on to the next trophic level, while the rest is lost primarily as heat.

Similar Questions:

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

Assertion (A): Most of the vitamins are not synthesised in human body.
Reason (R): Human organ synthesise only essential micronutrients.

Select the correct answer form the code given below.
  1. A) Both (A) & (R) are true & (R) is correct explanation of (A)
  2. B) Both (A) & (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.
Which one of the following is not correctly matched? Green House Gas – Source
  1. A) Carbon dioxide – Thermal Power Stations
  2. B) Chloro Fluro carbon – Automobile
  3. C) Nitrous Oxide – Waterlogged Paddy fields
  4. D) Sulphur dioxide – Brick Kilns
Biodegradable pollutant is:
  1. A) Mercury
  2. B) Sewage
  3. C) Plastic
  4. D) Asbestos
Which of the following step is of paramount importance for living on the best of human population?
  1. A) Afforestation
  2. B) Stoppage of mining work
  3. C) Protection on wild goods
  4. D) Reduce the use of natural resources
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
Which one of the following is important strategy for the conservation of biodiversity?
  1. A) Biosphere Reserves
  2. B) Botanical Gardens
  3. C) National Parks
  4. D) Wild Life Sanctuaries
The concept of carbon credit originated from
  1. A) Earth Summit, Rio-de-Janeiro
  2. B) Kyoto protocol
  3. C) Montreal protocolo
  4. D) G-8 Summit, Heiligendam
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
Which of the following is not correctly matched ?
  1. A) Cartagena Protocol - Biosafety
  2. B) Stockholmes Convention - Persistent organic pollutant
  3. C) Montreal Protocol - Ozone Layer
  4. D) Kyoto Protocol - Save Water
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): Article 30 of the Constitution of India does not define the term 'minorities'.
Reason (R): The Constitution recognises only linguistic and religious minorities.

Select the correct answer from the codes given below:
Codes:
  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 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
With reference to the detailed report of Tiger Census 2018 released by the Government of India in July 2020, which of the following Statement(s) is/are correct?

1. India has 70% of total global tiger’s population.
2. Nearly 30% of India’s tigers live outside tiger reserve.
Select the correct answer fro? the codes given below.
  1. A) 1 Only
  2. B) 2 Only
  3. C) 1 and 2 both
  4. D) Neither 1 nor 2