Skip to main content

class 10 biology chapter 7 mcqs

Biology class 10

Chapter 7

Man and His Environment 

100 MCQs

  1. The total surroundings of an organism are called
    a) Ecology
    b) Environment
    c) Habitat
    d) Atmosphere
    Answer: b

  2. Which of the following is a biotic component of the environment?
    a) Water
    b) Soil
    c) Plants
    d) Air
    Answer: c

  3. An organism's specific role or function in its habitat is known as:
    a) Ecosystem
    b) Food chain
    c) Niche
    d) Community
    Answer: c

  4. The study of the relationship between organisms and their environment is
    a) Physiology
    b) Zoology
    c) Ecology
    d) Cytology
    Answer: c

  5. Which of these is an abiotic factor?
    a) Bacteria
    b) Light
    c) Plants
    d) Animals
    Answer: b

  6. A group of organisms of the same species living in the same place is called:
    a) Community
    b) Ecosystem
    c) Habitat
    d) Population
    Answer: d

  7. Which of the following is the ultimate source of energy for all life on Earth?
    a) Plants
    b) Sun
    c) Soil
    d) Water
    Answer: b

  8. The green plants in an ecosystem are
    a) Consumers
    b) Decomposers
    c) Producers
    d) Carnivores
    Answer: c

  9. The organisms that break down dead matter are
    a) Producers
    b) Consumers
    c) Decomposers
    d) Herbivores
    Answer: c

  10. A food chain always starts with
    a) Herbivores
    b) Decomposers
    c) Carnivores
    d) Producers
    Answer: d

  11. Which of these is a primary consumer?
    a) Lion
    b) Tiger
    c) Cow
    d) Hawk
    Answer: c

  12. A food web consists of
    a) One food chain
    b) Many interlinked food chains
    c) Only producers
    d) Only decomposers
    Answer: b

  13. Organisms that eat both plants and animals are called
    a) Herbivores
    b) Carnivores
    c) Omnivores
    d) Insectivores
    Answer: c

  14. The layer of air surrounding Earth is known as:
    a) Lithosphere
    b) Hydrosphere
    c) Atmosphere
    d) Biosphere
    Answer: c

  15. Which of these is not a renewable resource?
    a) Wind
    b) Sunlight
    c) Petroleum
    d) Water
    Answer: c

  16. Which gas is responsible for global warming?
    a) Oxygen
    b) Carbon dioxide
    c) Nitrogen
    d) Hydrogen
    Answer: b

  17. The presence of harmful substances in the environment is called
    a) Pollution
    b) Erosion
    c) Rotation
    d) Deforestation
    Answer: a

  18. Acid rain is caused by:
    a) Oxygen and nitrogen
    b) Carbon dioxide and ozone
    c) Sulphur dioxide and nitrogen oxides
    d) Dust and water vapor
    Answer: c

  19. A major cause of ozone layer depletion is
    a) CO₂
    b) Nitrogen
    c) CFCs
    d) Methane
    Answer: c

  20. Which human activity leads to deforestation?
    a) Mining
    b) Afforestation
    c) Crop rotation
    d) Organic farming
    Answer: a

  21. Which of these diseases is caused by polluted water?
    a) Typhoid
    b) Malaria
    c) Tuberculosis
    d) Diabetes
    Answer: a

  22. What is the role of decomposers in the ecosystem?
    a) Produce food
    b) Trap solar energy
    c) Recycle nutrients
    d) Absorb carbon dioxide
    Answer: c

  23. Overuse of fertilizers causes:
    a) Air pollution
    b) Noise pollution
    c) Water pollution
    d) Light pollution
    Answer: c

  24. A group of different populations living together in an area is called:
    a) Ecosystem
    b) Species
    c) Community
    d) Niche
    Answer: c

  25. Which of the following contributes to noise pollution?
    a) Forest
    b) Waterfall
    c) Loudspeakers
    d) Photosynthesis
    Answer: c

  1. The natural home or environment of an organism is called:
    a) Community
    b) Ecosystem
    c) Habitat
    d) Niche
    Answer: c

  2. Which of the following is an example of a secondary consumer?
    a) Grasshopper
    b) Frog
    c) Grass
    d) Cow
    Answer: b

  3. Plants absorb carbon dioxide mainly through:
    a) Roots
    b) Flowers
    c) Stomata
    d) Chloroplast
    Answer: c

  4. Which of the following leads to soil pollution?
    a) Reforestation
    b) Use of compost
    c) Use of plastics
    d) Crop rotation
    Answer: c

  5. The organisms which prepare their own food are:
    a) Saprotrophs
    b) Autotrophs
    c) Heterotrophs
    d) Parasites
    Answer: b

  6. The term used for wise use of natural resources is:
    a) Pollution
    b) Conservation
    c) Deforestation
    d) Exploitation
    Answer: b

  7. Which one is a non-renewable resource?
    a) Coal
    b) Air
    c) Forest
    d) Water
    Answer: a

  8. Which of the following gases is a greenhouse gas?
    a) Nitrogen
    b) Methane
    c) Oxygen
    d) Helium
    Answer: b

  9. The overuse of pesticides leads to:
    a) Water purification
    b) Soil fertility
    c) Biomagnification
    d) Genetic variation
    Answer: c

  10. Which layer of the atmosphere protects us from UV rays?
    a) Troposphere
    b) Stratosphere
    c) Mesosphere
    d) Ionosphere
    Answer: b

  11. What causes the green house effect?
    a) Oxygen
    b) Nitrogen
    c) CO₂ and other gases
    d) Argon
    Answer: c

  12. The energy flow in a food chain is:
    a) Bidirectional
    b) Multidirectional
    c) Unidirectional
    d) Reversible
    Answer: c

  13. Biodegradable wastes include:
    a) Plastic
    b) Glass
    c) Vegetable peels
    d) Polythene bags
    Answer: c

  14. Non-biodegradable materials are:
    a) Eggshells
    b) Plastic bottles
    c) Banana peels
    d) Paper
    Answer: b

  15. The main cause of water pollution is:
    a) Natural springs
    b) Rainwater
    c) Industrial waste
    d) Air
    Answer: c

  16. Decomposers are mostly:
    a) Fungi and bacteria
    b) Plants and algae
    c) Humans and animals
    d) Viruses and protozoa
    Answer: a

  17. The term “biomagnification” refers to:
    a) Increase in body size
    b) Increase in population
    c) Increase in toxic substances in food chain
    d) Genetic changes in organisms
    Answer: c

  18. Which one is a consequence of deforestation?
    a) Decreased CO₂
    b) Reduced soil erosion
    c) Increased rainfall
    d) Loss of biodiversity
    Answer: d

  19. Which activity can help in conserving water?
    a) Excessive irrigation
    b) Fixing leaking taps
    c) Wasting rainwater
    d) Polluting rivers
    Answer: b

  20. The term "ecosystem" was coined by:
    a) Darwin
    b) Reiter
    c) Tansley
    d) Wallace
    Answer: c

  21. A pond is an example of:
    a) Artificial ecosystem
    b) Forest ecosystem
    c) Aquatic ecosystem
    d) Terrestrial ecosystem
    Answer: c

  22. Which is the largest natural ecosystem?
    a) Desert
    b) Ocean
    c) Forest
    d) Pond
    Answer: b

  23. Which is not a component of an ecosystem?
    a) Energy
    b) Organisms
    c) Rocks
    d) Speed
    Answer: d

  24. Which of these practices reduces environmental pollution?
    a) Burning plastic
    b) Using public transport
    c) Deforestation
    d) Throwing garbage in rivers
    Answer: b

  25. Which of the following is a cause of air pollution?
    a) Running water
    b) Planting trees
    c) Burning fossil fuels
    d) Harvesting crops
    Answer: c

  26. The increase in Earth's temperature due to greenhouse gases is called:
    a) Global warming
    b) Ozone depletion
    c) Acid rain
    d) Eutrophication
    Answer: a

  27. Which of the following is an example of symbiosis?
    a) Lion and deer
    b) Cow and grass
    c) Lichen
    d) Human and mosquito
    Answer: c

  28. The non-living components of an ecosystem are:
    a) Producers
    b) Biotic factors
    c) Abiotic factors
    d) Decomposers
    Answer: c

  29. Which of the following is not a fossil fuel?
    a) Coal
    b) Natural gas
    c) Petrol
    d) Biomass
    Answer: d

  30. The biotic components of an ecosystem include:
    a) Temperature and sunlight
    b) Soil and air
    c) Plants and animals
    d) Water and oxygen
    Answer: c

  31. What is the role of herbivores in the ecosystem?
    a) Produce food
    b) Feed on carnivores
    c) Feed on plants
    d) Decompose dead organisms
    Answer: c

  32. Which of the following is a natural pollutant?
    a) Volcano ash
    b) Smoke from factories
    c) Pesticides
    d) Plastic
    Answer: a

  33. Which of these is a biodegradable waste?
    a) Glass bottle
    b) Fruit peel
    c) Plastic straw
    d) Aluminum foil
    Answer: b

  34. Which cycle involves the movement of water in nature?
    a) Oxygen cycle
    b) Nitrogen cycle
    c) Water cycle
    d) Carbon cycle
    Answer: c

  35. Overuse of groundwater may lead to:
    a) Waterlogging
    b) Flood
    c) Drought
    d) Groundwater recharge
    Answer: c

  36. Which of the following is a carnivore?
    a) Rabbit
    b) Cow
    c) Tiger
    d) Goat
    Answer: c

  37. The balance of nature is disturbed due to:
    a) Photosynthesis
    b) Reforestation
    c) Pollution
    d) Rotation of Earth
    Answer: c

  38. Earth Day is celebrated on:
    a) April 22
    b) March 5
    c) June 21
    d) October 16
    Answer: a

  39. Which is a man-made ecosystem?
    a) Forest
    b) Pond
    c) Aquarium
    d) Lake
    Answer: c

  40. The ozone layer protects us from:
    a) Infrared rays
    b) Visible light
    c) Ultraviolet rays
    d) X-rays
    Answer: c

  41. Which of the following is not a greenhouse gas?
    a) Methane
    b) Carbon dioxide
    c) Water vapor
    d) Oxygen
    Answer: d

  42. What is the primary cause of acid rain?
    a) Greenhouse gases
    b) UV radiation
    c) SO₂ and NOx emissions
    d) Carbon monoxide
    Answer: c

  43. The main source of noise pollution in cities is:
    a) Birds chirping
    b) Traffic
    c) Rain
    d) Breeze
    Answer: b

  44. The natural process of breaking down of biodegradable waste is called:
    a) Composting
    b) Burning
    c) Recycling
    d) Incineration
    Answer: a

  45. A food chain ends with:
    a) Producer
    b) Consumer
    c) Decomposer
    d) Herbivore
    Answer: c

  46. What do carnivores eat?
    a) Plants
    b) Insects
    c) Animals
    d) Fungi
    Answer: c

  47. Which of the following is the best way to reduce waste?
    a) Incineration
    b) Recycling
    c) Dumping
    d) Burning
    Answer: b

  48. The process of excessive algal growth due to nutrient pollution is:
    a) Biomagnification
    b) Eutrophication
    c) Acidification
    d) Ozonification
    Answer: b

  49. Which one of the following is not an air pollutant?
    a) CO₂
    b) SO₂
    c) O₂
    d) NO₂
    Answer: c

  50. Which factor has the biggest impact on climate change?
    a) Wind
    b) Human activities
    c) Rainfall
    d) Moon phases
    Answer: b

  51. Which of these can be reduced by using a catalytic converter in vehicles?
    a) Dust
    b) Carbon monoxide
    c) Oxygen
    d) Steam
    Answer: b

  52. Which of the following methods helps in waste management?
    a) Landfilling
    b) Composting
    c) Recycling
    d) All of these
    Answer: d

  53. Which of these is not part of the nitrogen cycle?
    a) Ammonification
    b) Nitrification
    c) Photosynthesis
    d) Denitrification
    Answer: c

  54. The part of Earth where life exists is:
    a) Lithosphere
    b) Hydrosphere
    c) Atmosphere
    d) Biosphere
    Answer: d

  55. The first trophic level in any food chain is:
    a) Herbivores
    b) Carnivores
    c) Decomposers
    d) Producers
    Answer: d

  56. The term “sustainable development” means:
    a) Economic growth only
    b) Development without caring for the environment
    c) Development that meets present needs without harming future generations
    d) Use of fossil fuels
    Answer: c

  57. What do we call species that are in danger of extinction?
    a) Vulnerable
    b) Rare
    c) Endangered
    d) Threatened
    Answer: c

  58. Water logging of soil is mainly caused by:
    a) Under-irrigation
    b) Over-irrigation
    c) Rainwater harvesting
    d) Wind erosion
    Answer: b

  59. Which of these activities does not contribute to water pollution?
    a) Dumping industrial waste
    b) Oil spills
    c) Boiling drinking water
    d) Use of fertilizers
    Answer: c

  60. Paper is made from:
    a) Plastic
    b) Metal
    c) Wood pulp
    d) Sand
    Answer: c

  61. Which sector contributes most to deforestation?
    a) Housing
    b) Tourism
    c) Agriculture
    d) Education
    Answer: c

  62. An example of a biodegradable pollutant is:
    a) Plastic
    b) Glass
    c) Pesticides
    d) Sewage
    Answer: d

  63. Which type of energy is least polluting?
    a) Thermal
    b) Hydroelectric
    c) Solar
    d) Nuclear
    Answer: c

  64. Which human activity leads to increased desertification?
    a) Reforestation
    b) Afforestation
    c) Overgrazing
    d) Drip irrigation
    Answer: c

  65. Which method is best for controlling air pollution?
    a) Deforestation
    b) More vehicles
    c) Use of filters in chimneys
    d) Burning waste
    Answer: c

  66. The environment includes:
    a) Biotic factors
    b) Abiotic factors
    c) Both a and b
    d) None
    Answer: c

  67. Planting more trees helps to reduce:
    a) Soil fertility
    b) Oxygen level
    c) Carbon dioxide
    d) Groundwater level
    Answer: c

  68. Which of the following is used for rainwater harvesting?
    a) Plastic bag
    b) Open gutter
    c) Rooftop collection
    d) Sponge
    Answer: c

  69. Which of the following is a major cause of marine pollution?
    a) Noise
    b) Agricultural runoff
    c) Winds
    d) Groundwater
    Answer: b

  70. Which of these resources is exhaustible?
    a) Air
    b) Water
    c) Coal
    d) Sunlight
    Answer: c

  71. In a food chain, energy is transferred in what direction?
    a) Bottom to top
    b) Top to bottom
    c) Left to right
    d) Circular
    Answer: a

  72. Who eats both producers and consumers?
    a) Herbivore
    b) Carnivore
    c) Omnivore
    d) Decomposer
    Answer: c

  73. What is the best method to dispose of kitchen waste?
    a) Burning
    b) Composting
    c) Dumping in rivers
    d) Burying with plastic
    Answer: b

  74. Which of these is a direct human benefit of forests?
    a) CO₂ release
    b) Wood and fruits
    c) Desert formation
    d) Soil erosion
    Answer: b

  75. Which activity reduces biodiversity?
    a) Organic farming
    b) Forest conservation
    c) Habitat destruction
    d) Recycling
    Answer: c


Labels:

Comments

Post a Comment

Popular posts from this blog

class 9 biology mcq of chapter 3

🧬 Chapter 3: The Cell—MCQs 1. Who discovered the cell? A) Louis Pasteur B) Robert Hooke C) Anton van Leeuwenhoek D) Schleiden ✅ Answer: B) Robert Hooke 2. The term 'cell' was derived from the Latin word “cellula,” meaning: A) Water B) Small room C) Nucleus D) Tissue ✅ Answer: B) Small room 3. Which of the following is not a part of cell theory? A) All living things are made of cells B) Cells are the basic units of life C) All cells have a nucleus D) All cells come from pre-existing cells ✅ Answer: C) All cells have a nucleus 4. Which scientist proposed that all animals are made up of cells? A) Schleiden B) Schwann C) Virchow D) Hooke ✅ Answer: B) Schwann 5. The smallest living unit in an organism is: A) Organelle B) Tissue C) Cell D) Organ ✅ Answer: C) Cell 6. A typical cell has how many main parts? A) One B) Two C) Three D) Four ✅ Answer: C) Three (cell membrane, cytoplasm, nucleus) 7. Which cell organelle is called the 'powerh...
Post a Comment
Read more

class 9 biology mcq of chapter 4, cell cycle

   100 MCQs on Chapter 4: The Cell Cycle for Class 9 Biology.  Chapter 4: The Cell Cycle – MCQs What is the basic unit of life? A) Atom B) Tissue C) Cell D) Organ Answer: C) Cell The cell cycle is the series of events that take place in a cell leading to its: A) Growth and metabolism B) Division and replication C) Movement and differentiation D) Aging and death Answer: B) Division and replication Which of the following phases is not part of interphase? A) G1 phase B) G2 phase C) M phase D) S phase Answer: C) M phase The longest phase of the cell cycle is: A) M phase B) G1 phase C) S phase D) Interphase Answer: D) Interphase DNA replication occurs during the: A) G1 phase B) S phase C) G2 phase D) M phase Answer: B) S phase The phase after S phase is: A) G1 B) M C) G2 D) Cytokinesis Answer: C) G2 Mitosis is also known as: A) Cell death B) Cell duplication C) Somatic cell division D) Meiosis Answer: C) Somatic...
Post a Comment
Read more

class 9 biology chapter 2 mcq's

  50 MCQs  for Chapter 2: Biodiversity   1. What is biodiversity? a) Study of ecosystems b) Variety of life on Earth c) Science of classification d) Only study of plants Sol: (b) Variety of life on Earth 2. Which branch of biology deals with the classification of organisms? a) Morphology b) Ecology c) Taxonomy d) Genetics Sol: (c) Taxonomy 3. Who is known as the father of taxonomy? a) Charles Darwin b) Gregor Mendel c) Aristotle d) Carolus Linnaeus Sol: (d) Carolus Linnaeus 4. The system introduced by Linnaeus for naming organisms is called a) Binary code b) Scientific naming c) Binomial nomenclature d) Biodiversity classification Sol: (c) Binomial nomenclature 5. In binomial nomenclature, the first part of the name represents: a) Species b) Order c) Family d) Genus Sol: (d) Genus 6. In binomial nomenclature, the second part represents: a) Class b) Phylum c) Species d) Kingdom Sol: (c) Species 7. The correct way to write the scie...
Post a Comment
Read more