Environment Studies (21CIV59) - Ecosystems Quiz

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Questions and Answers

What is a significant factor in the transmission of waterborne diseases?

  • The release of treated fecal matter into water bodies.
  • Consuming properly handled food.
  • Using treated sewage for irrigation.
  • Discharge of industrial wastewater into water sources. (correct)

Cholera and typhoid are caused by which type of organism?

  • Viruses
  • Worms
  • Bacteria (correct)
  • Fungi

What is the most significant source of natural fluoride?

  • Toothpaste.
  • River water.
  • Groundwater. (correct)
  • Processed food products.

What health issue can be caused by excessive nitrate in drinking water?

<p>Methemoglobinemia (blue baby syndrome). (B)</p> Signup and view all the answers

What is the primary cause of tooth disfigurement related to water contamination?

<p>Fluoride. (B)</p> Signup and view all the answers

The intersection of which two spheres is most crucial for the development of fertile soil?

<p>Hydrosphere and Lithosphere (D)</p> Signup and view all the answers

Which statement most accurately describes the biosphere?

<p>The thin zone of living matter, including all organisms. (B)</p> Signup and view all the answers

Atmospheric composition is often described using percentages. By what measure are the 78% Nitrogen and 21% Oxygen typically described?

<p>volume (B)</p> Signup and view all the answers

Which of these is categorized as a biotic component of an ecosystem?

<p>None of the above (D)</p> Signup and view all the answers

How does the flow of energy typically move within an ecosystem?

<p>Unidirectional (C)</p> Signup and view all the answers

What is the trophic level of organisms that obtain energy by consuming producers?

<p>Herbivores (D)</p> Signup and view all the answers

What term describes a sequence of organisms showing the transfer of energy through eating and being eaten?

<p>Food chain (C)</p> Signup and view all the answers

Which of the following is considered a producer within an ecosystem?

<p>Plants and some bacteria capable of producing their own food (D)</p> Signup and view all the answers

Which of the following cycles are significantly influenced by soils?

<p>All of the above (D)</p> Signup and view all the answers

What is the most abundant element found within the Earth's crust?

<p>Oxygen (B)</p> Signup and view all the answers

What is the primary source of organic matter in soil?

<p>Both plant tissues and litter. (B)</p> Signup and view all the answers

What factors most influence the extent of leaching in soil?

<p>Rainfall, irrigation, and soil texture. (A)</p> Signup and view all the answers

Which of the following is NOT a typical component of soil?

<p>Ozone (D)</p> Signup and view all the answers

Which of these is the primary source of fly ash, a significant pollutant?

<p>Thermal power plants (D)</p> Signup and view all the answers

Which of these is NOT considered a source of radioactive contamination?

<p>Modern agricultural practices (A)</p> Signup and view all the answers

What is a significant consequence of extensive mining practices?

<p>Loss of grazing and fertile land (C)</p> Signup and view all the answers

Which authority is responsible for monitoring industrial effluent?

<p>Pollution control board (D)</p> Signup and view all the answers

What type of organization is the Centre for Science and Environment?

<p>Non-government organization (C)</p> Signup and view all the answers

What is a primary goal of environmental education for all?

<p>To foster economic development (D)</p> Signup and view all the answers

Who is recognized as the leader of the Chipko Movement?

<p>Sunder Lal Bahuguna (D)</p> Signup and view all the answers

Under which act was the Central Pollution Control Board established?

<p>Environmental (Protection) Act 1986 (A)</p> Signup and view all the answers

Which state has the highest women literacy rate in India?

<p>Kerala (B)</p> Signup and view all the answers

What does ISO 14000 standards primarily deal with?

<p>Environmental Management (B)</p> Signup and view all the answers

What is one of the objectives of the Wild Life (Protection) Act 1972?

<p>To preserve biodiversity (D)</p> Signup and view all the answers

Which of the following uses of CFCs is correct?

<p>All of these (D)</p> Signup and view all the answers

What is the formula of CFC-114?

<p>CF2ClCF2Cl (B)</p> Signup and view all the answers

What factors are considered in calculating the ODP of a specific chemical?

<p>All of these (C)</p> Signup and view all the answers

Which of the following species has a zero ODP value?

<p>HFCs (D)</p> Signup and view all the answers

Which of the following statements about CFCs is not correct?

<p>They are very reactive in the troposphere (A)</p> Signup and view all the answers

In which layer of the atmosphere is the ozone layer primarily found?

<p>Stratosphere (D)</p> Signup and view all the answers

Which statement about ozone is NOT true?

<p>Ozone is not a greenhouse gas (A)</p> Signup and view all the answers

What does livestock not include among the options listed?

<p>Horticulture (D)</p> Signup and view all the answers

Which of the following is NOT a direct consequence of housing activity on ecosystems?

<p>A need to preserve existing forests for timber production (A)</p> Signup and view all the answers

What is the primary reason for the increase in acid rain?

<p>Industrialization (A)</p> Signup and view all the answers

What is the main purpose of the Environmental (Protection) Act of 1986 in India?

<p>To protect the environment from harmful activities (C)</p> Signup and view all the answers

How does modern agriculture contribute to soil degradation?

<p>All of the above. (D)</p> Signup and view all the answers

The Environmental (Protection) Act, 1986, deals with which environmental aspect(s)?

<p>All of the above (D)</p> Signup and view all the answers

What is the significance of the ISO 14000 standards?

<p>They are related to environmental management systems. (C)</p> Signup and view all the answers

Which of the following is an example of a greenhouse gas that is colorless, non-flammable, has a sweetish odor, and is also known as laughing gas?

<p>Nitrous Oxide (C)</p> Signup and view all the answers

What is the primary reason for the establishment of the Karnataka State Pollution Control Board (KSPCB)?

<p>To monitor and control pollution levels in the state (B)</p> Signup and view all the answers

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Flashcards

Causes of water borne disease

Factors like contamination through sewage and industrial waste contribute to water borne diseases.

Cholera & Typhoid

These diseases are primarily caused by bacteria, affecting water and food safety.

Excessive Nitrate effects

High levels of nitrates in drinking water can cause 'blue babies', a serious condition.

Fluoride disfigurement

Excessive fluoride leads to disfigurement in teeth, affecting dental health.

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Groundwater dependence

Groundwater availability depends on rainfall, geological formations, and runoff.

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Biosphere

The shell of organic matter on Earth's surface that includes all living things.

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Components of Atmosphere

Atmosphere consists of 70% Nitrogen and 21% Oxygen.

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Biotic Component

A living part of an ecosystem that affects other organisms.

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Energy Flow in Ecosystem

Energy in an ecosystem flows unidirectionally from producers to consumers.

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Producers

Organisms like plants that create their own food through photosynthesis.

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Biological Cycling

The recycling of inorganic nutrients in ecosystems maintained by producers, consumers, and decomposers.

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Consumers

Organisms that feed directly or indirectly on producers.

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Primary Producers in Forest

Chlorophyll-containing trees and plants act as primary producers.

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CFC Uses

CFCs are used as solvents, refrigerants, and blowing agents.

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CFC-114 Formula

The formula for CFC-114 is CF2ClCF2Cl.

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ODP Factors

ODP considers species' reactivity, atmospheric lifetime, and molar mass.

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Zero ODP Species

HFCs have a zero ozone depletion potential (ODP).

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Ozone Layer Location

The ozone layer is located in the stratosphere.

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Ozone Misconceptions

Ozone is a major component of smog but protects from UV radiation.

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Animal Husbandry Definition

Animal husbandry is the management of animals for agricultural purposes.

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Gas Produced by Ruminants

Ruminants produce methane (CH4).

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Ecosystem disturbance by housing

Housing activities require large raw materials, disturbing ecosystems.

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Environmental impact of mining

Mining activities lead to ecosystem devastation.

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Effect of modern agriculture on soil

Modern agriculture contributes to erosion, acidification, and salinization.

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Acid rain causes

Acid rain increases due to urbanization and industrialization.

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Ozone hole discovery

The ozone hole was first discovered over Antarctica.

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Environmental Protection Act year

The Environmental (Protection) Act was enacted in 1986.

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ISO 14000 standards

ISO 14000 standards focus on pollution management.

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Population explosion effects

Population explosion leads to socio-economic problems, food scarcity, and energy crises.

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Authority to monitor industrial effluent

Pollution Control Board is responsible for monitoring industrial effluent in India.

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Centre for Science and Environment

A non-government organization that focuses on environmental issues in India.

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Environmental education goals

The goal includes awareness, participation, and knowledge improvement for all individuals.

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Environmental education necessity

Environmental education is necessary for everyone—children, adults, and scientists alike.

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Leader of the Chipko Movement

Sunder Lal Bahuguna is recognized as the leader of the Chipko Movement in India.

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Central Pollution Control Board establishment

Established under the Environmental (Protection) Act of 1986.

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Earth Day observation date

Earth Day is observed on April 22nd each year to promote environmental awareness.

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Endangered species in India

The Indian elephant is considered an endangered species due to habitat loss and poaching.

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Importance of Soils

Soils are vital environmental agents involved in cycles like carbon, nitrogen, and phosphorus.

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Most Abundant Element

The most abundant element in the Earth's crust is oxygen.

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Source of Organic Matter

The primary source of organic matter in soil comes from plant tissues and litter.

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Leaching Factors

Leaching extent depends on rainfall, irrigation, and soil texture.

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Components of Soil

Ozone is not a component of soil; soil consists of mineral matter, organic matter, and soil air.

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Source of Fly Ash

Fly ash is primarily produced by thermal power plants.

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Soil Pollution Causes

Major causes of soil pollution include pesticides, chemical fertilizers, and improper waste disposal.

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Noise Classification

Occupational noise is a classification of noise, affecting workers in their environments.

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Study Notes

Environment Studies (21CIV59) - Model 1 Environment

  • Environment: Surrounding (biotic + abiotic) in which organisms live; the sum total of social, economic, and biological behavior of animals; the total of developmental activities in an area.
  • Unsustainable development: Results from prioritizing economic and social patterns over the quality and quantity of resources.
  • Ecosystem: A self-sufficient unit with all organisms interacting with the physical environment; characterized by co-existence through mutual adjustment.
  • Ecosystem examples: Forest, Desert, Water, Grassland
  • Ecosystem stability factors: Balance between predators and prey, vegetation and herbivores/carnivores, and competing species and biotic factors
  • Nutrient cycling: Closely linked to energy flow, autotrophs, nutrients, and decomposers.
  • Energy flow in an ecosystem: Energy is lost as heat; nutrients are recycled.

Objective Type Questions (Model 1 Environment)

  • Permissible lead limit in potable water (BIS): 0.05 mg/L
  • Water diseases caused by contaminated water: Cholera, Typhoid, Meningitis, Hepatitis A & E.
  • Water pollution causing factors: Dirty water, deforestation, electromagnetic radiation, radioactivity.
  • Harmful elements in water: High levels of nitrates (blue baby syndrome), pesticides (cancer and neurological disorders), certain chemicals, etc.
  • Habitat: Physical and chemical conditions where organisms live.

Objective Type Questions (Unit 2 Natural Resources)

  • Percentage of accessible water supply: Approximately 10%.
  • Water quality standards: Related to the United States and Indian standard institutions.
  • Environmental objectives: Encouraging more crop production per drop.
  • Green Revolution: Related to crop variety improvements, use of fertilizers, and expanded irrigation.

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