Environment and Ecology Selected Questions and Answers Set 4

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Q.1:- Under optional conditions, the fruit fly (Drosphilia) is capable of producing a new generation every two weeks. This ability is referred to as the ……………. Of the species.

Ans:- Biotic Potential

Q.2:- ………………………….. is the least influential in determining the distribution of terrestrial biomes.

Ans:- Salinity

Q.3:- Which of the following statements regarding landslides is / are correct ?

  1. They are sudden and sporadic.
  2. They result when the slope is gentle.
  3. Mining activity is also responsible for landslides.

Select the correct answer using the code given below.

  1. 1 and 2 only
  2. 1 and 3 only
  3. 3 only
  4. 1, 2 and 3

Ans:- (b) 1 and 3 only

Q.4:- The CERES Principles are ?

Ans:- A set of voluntary environmental standards for businesses.

Q.5:- What type of mixture is smoke ?

Ans:- Gas mixed with a liquid and a solid

Q.6:- Which of the following factors can decrease biological oxygen demand (BOD) of any freshwater ecosystem ?

  1. Large amount of sewage
  2. Large biomass accumulation and decomposition
  3. Increased organic matter pollution
  4. Low temperature and low plant biomass accumulation

Ans:- (b) Large biomass accumulation and decomposition

Q.7:- The Chipko Movement

  1. was environment movement to prevent cutting down of trees
  2. raised the question of ecological and economic exploitation
  3. is a movement against alcoholism as its broadened agenda
  4. demanded that local communities should have control over their natural resources

Select the correct answer using the code given below :

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1, 3 and 4 only
  4. 1, 2, 3 and 4

Ans:- (d) 1, 2, 3 and 4

Q.8:- In hill areas soil erosion can be minimized by which of the following methods ?

  1. Terracing
  2. Contour Ploughing
  3. Strip Farming
  4. Planting Perennial Species

Select the correct answer using the code given below :

  1. 1, 2 and 3 only
  2. 3 and 4 only
  3. 1, 2 and 4 only
  4. 1, 2, 3 and 4

Ans:- (d) 1, 2, 3 and 4

Q.9:- Endosulfan spray on cashew crop resulted in the pollution to the tune of tragedy in :

Ans:- Kerala

Q.10:- Biodiversity is richer in ?

Ans:- Tropical regions

Q.11:- Which one of the following gases is supporter of combustion ?

  1. Hydrogen
  2. Nitrogen
  3. Carbon Dioxide
  4. Oxygen
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Ans:- (d) Oxygen

Q.12:- Which of the following series is true about energy flow in an ecosystem ?

  1. Producers -> Decomposers -> Consumers
  2. Decomposers -> Consumers -> Producers
  3. Producers -> Consumers -> Decomposers
  4. Consumers -> Producers -> Decomposers

Ans:- (c) Producers -> Consumers -> Decomposers

Q.13:- Plants capable of performing photosynthesis belong to which one among the following types of organisms ?

  1. Heterotrophs
  2. Saprotrophs
  3. Autotrophs
  4. Chemoheterotrophs

Ans:- (c) Autotrophs

Q.14:- Acid rain is caused by the pollution of environment by ?

Ans:- Nitrous Oxide and Sulphur Dioxide

Q.15:- Which one among the following groups is the most abundant in terms of number of species identified ?

  1. Fungi
  2. Green Plants
  3. Bacteria
  4. Insects

Ans:- (c) Bacteria

Q.16:- The Union Ministry of Environment and Forest recently approved in principle a proposal for Western Ghats Development prepared by K. Kasturirangan Led Panel. The panel has recommended a ban on development activities in around 60000 square km ecologically sensitive area spread over ?

  1. Gujarat, Andhra Pradesh, Tamil Nadu, Maharashtra, Kerala and Karnataka
  2. Gujarat, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu
  3. Odisha, Maharashtra, Goa, Kerala, Andhra Pradesh and Tamil Nadu
  4. Karnataka, Odisha, Gujarat, Kerala, Maharashtra and Tamil Nadu

Ans:- (b) Gujarat, Maharashtra, Goa, Karnataka, Kerala and Tamil Nadu

Q.17:- Which one among the following is an environment friendly activity ?

  1. Burning of waste polythene and plastics for their disposal
  2. Use of chemical fertilizers and pesticides to increase crop productivity
  3. Burning of biomass as fuel
  4. Use of biogas as fuel

Ans:- (d) Use of biogas as fuel

Q.18:- CFCs (Chloro Fluoro Carbons ) are greenhouse gases that have caused a rise of 0.3 oC in the global temperatures in the past centry. Name the CFC that is used in refrigerators.

Ans:- Freon

Q.19:- Which is the most widely discussed impact of climate change ?

Ans:- Increase in average sea level

Q.20:- The concept of ‘Carbon Credit’ originated from which one of the following ?

  1. Kyoto Protocol
  2. Earth Summit
  3. Montreal Protocol
  4. G-8 Summit
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Ans:- (a) Kyoto Protocol

Q.21:- There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon ?

  1. Discharge of nutrients from estuaries.
  2. Run off from the land during the monsoon.
  3. Upwelling in the seas.

Select the correct answer from the codes given below :

  1. 1 Only
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1, 2 and 3

Ans:- (b) 1 and 2 only

Q.22:- Due to advances in mechanization and the development of new strains of crops, food production and consequently human population has increased rapidly since the early 1800’s. This sudden increase in food productivity has been referred to as the :

  1. Genetic Revolution
  2. Biotechnological Revolution
  3. White Revolution
  4. Green Revolution

Ans:- (d) Green Revolution

Q.23:- The Supreme Court of India on July 29, 2011 directed the suspension of all mining operations and transportation in Bellary district of Karnataka till further orders. In this respect, which of the following statements is / are correct ?

  1. The Court was convinced that over exploration of the area had caused large scale environmental degradation.
  2. The Court felt that Article 21 of the Constitution (Right of Life) was violated by such exploration.
  3. The Court directed the Central Government to prepare rehabilitation scheme for restoration of the forest wealth.

Select the correct answer using the code given below :

  1. 1, 2 and 3
  2. 1 and 2 only
  3. 2 and 3 only
  4. 1 only

Ans:- (a) 1, 2 and 3

Q.24:- Of the following which one pollutes the air of a big city ?

  1. Copper
  2. Chromium
  3. Lead
  4. Calcium

Ans:- (c) Lead

Q.25:- Which sector is the largest emitter of greenhouse gases in India ?

Ans:- Electric Power Generation




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