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Class 4 Science MCQs Chapter 2


Updated: 02 Oct 2022

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Welcome to tehkals.com, your go-to destination for Class 4 Science MCQs Chapter 2. Explore our comprehensive collection of Class 4 Science MCQs of Chapter No. 2, focusing on “Ecosystem.”

If you want to succeed and clear your PST, CT, DM, PT, CT, TT, SST, and SS Tests, then our comprehensive MCQs (Multiple Choice Questions) provide the perfect solution by giving the treasure of knowledge and bank of MCQs.

Class 4 Science MCQs Chapter 2

Ecosystem

Chapter No. 2 Test # 1

1. A sum of all living and non-living things around an organism is called _____
(a) Organism
(b) Environment
ⓒLiving
(d) Nonliving thing
Show Answer

Environment


2. The living and non – living components of an environment ______ with each other.
(a) Destruct
(b) Interact
(c) Social
(d) None of these
Show Answer

Interact


3. Every living thing lives in a ________ environment.
(a) Particular
(b) Non particular
(c) Forest
(d) Desert
Show Answer

Particular


4. The living thing and non-living thing component of any environment make
(a) Desert
(b) Forest
(c) Ecosystem
(d) Lake
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Ecosystem


5. The collection of abiotic and biotic components of an environment is called ____________
(a) Desert
(b) Forest
(c) Ecosystem
(d) Lake
Show Answer

Ecosystem


6. The largest desert of the world is ______.
(a) Cholistan
(b) Thal
(c) Sahara
(d) None of these
Show Answer

Sahara


7. The Sahara Desert is located in the continent ________.
(a) India
(b) America
(c) Australia
(d) Africa
Show Answer

Africa


8. The desert located in Mianwali and Bhakkar in Pakistan is called ______
(a) Cholistan
(b) Thal
(c) Sahara
(d) None of these
Show Answer

Thal


9. Thal desert is located in _____
(a) Mianwali
(b) Bhakkar
(c) Both a & b
(d) None of these
Show Answer

Both a & b


10. The desert located in southern parts of Punjab is called ________
(a) Cholistan
(b) Thal
(c) Sahara
(d) None of these
Show Answer

Cholistan


11. The desert located in Sindh is called __________.
(a) Cholistan
(b) Thal
(c) Sahara
(d) Thar
Show Answer

Thar


12. The component of ecosystem is/are.
(a) Biotic
(b) Abiotic
(c) Both a & b
(d) None of these
Show Answer

Both a & b


13. The non-living component of an ecosystem is called _______ components.
(a) Biotic
(b) Abiotic
(c) Both a & b
(d) None of these
Show Answer

Abiotic


14. Temperature, air, water, light and soil are called _________ components of an ecosystem.
(a) Biotic
(b) Abiotic
(c) Both a & b
(d) None of these
Show Answer

Abiotic


15. An example of abiotic components of an environment are
(a) Soil
(b) Temperature
(c) Air
(d) All of these
Show Answer

All of these


16. Which of the following is not an abiotic component of an environment
(a) Plants
(b) Air
(c) Water
(d) Light
Show Answer

Plants


17. Which of the following as a biotic component of ecosystem?
(a) Water
(b) Air
(c) Fire
(d) Plants
Show Answer

Plants


18. Sunlight is abiotic component of the environment like
(a) Temperature
(b) Herbivores
(c) Plants
(d) Mammals
Show Answer

Temperature


19. Which of the following is the living component of an environment?
(a) Table
(b) Plants
(c) Pen
(d) All of these
Show Answer

Plants


20. Which of the following is the non-living component of an environment?
(a) Hen
(b) Plants
(c) Sunlight
(d) Birds
Show Answer

Sunlight


21. Anabiotic component of an ecosystem is
(a) Micro organisms
(b) Animals
(c) Plants
(d) water
Show Answer

water


22. The living component of an ecosystem are called _________ component.
(a) Biotic
(b) Abiotic
(c) Both a & b
(d) None of these
Show Answer

Biotic

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Chapter No. 2 Test # 2

23. Biotic components are divided into _______ groups.
(a) Three
(b) Four
(c) Five
(d) Six
Show Answer


24. The biotic component of an ecosystem is divided into_________ groups.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

All of these


25. The ______ produce food for themselves and for animals with the help of absorbed water and sunlight.
(a) Animals
(b) Consumer
(c) Plant
(d) None of these
Show Answer

Plant


26. The plants produce food for themselves and for animals with the help of
(a) Sunlight
(b) Absorbed water
(c) Both a & b
(d) None of these
Show Answer

Both a & b


27. As the plant produce food for them and for animal, so plants are called
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Producers


28. Herbs, climbers, shrubs and trees are ________
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Producers


29. _______ aquatic plants are produces.
(a) Lotus
(b) Algae
(c) Both a & b
(d) None of these
Show Answer

Both a & b


30. Lotus, algae are the major source of food for the _______ animals
(a) In aquatic
(b) Aquatic
(c) Desert
(d) Land
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Aquatic


31. Algae are __________.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Producers


32. The living things which obtain their food from other living thing are called.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Consumers


33. _______ cannot make their own food.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Consumers


34. Consumers _______ make their own food.
(a) Can
(b) Cannot
(c) Bath a & b
(d) None of these 35. Consumers depend on __________ for their food.
(a) Animals
(b) Plants
(c) Both a & b
(d) None of these
Show Answer

Cannot


36. All the animals are ___________.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Consumers


37. The living thing which breakdown the dead bodies of plants and animals into simple components for their food from these are called __________.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Decomposer


38. Among living organisms bacteria are:
(a) Producer
(b) Consumer
(c) Viruses
(d) Decomposers
Show Answer

Decomposers


39. Fungi are an example of ________
(a) Producer
(b) Consumer
(c) Viruses
(d) Decomposers
Show Answer

Decomposers


40 Which of the following organisms are decomposers?
(a) All plants
(b) Lions
(c) Rats
(d) Bacteria and fungi
Show Answer

Bacteria and fungi


41. Bacteria and fungi are _________.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Decomposer

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Chapter No. 2 Test # 3

42. Corals look like stone but actually these are _________.
(a) Plants
(b) Animals
(c) Stone
(d) Rock
Show Answer

Animals


43. _______ are animals.
(a) Algae
(b) Lotus
(c) Corals
(d) Both a & b
Show Answer

Corals


44. Corals are a part of beautiful ecosystem under ________
(a) Ground
(b) Desert
(c) Rock
(d) Sea
Show Answer

Sea


45. Corals usually live in form of colony which is called ________.
(a) Coral land
(b) Coral colony
(c) Coral ocean
(d) Coral reef
Show Answer

Coral reef


46. ________ are also called rainforests of the ocean.
(a) Coral
(b) Algae
(c) Lotus
(d) Bacteria
Show Answer

Coral


47. Corals are also called ________ of the ocean.
(a) Rainforests
(b) Land forests
(c) Ocean forests
(d) None of these
Show Answer

Rainforests


48. Corals are look like _______ but actually these are animals.
(a) Stones
(b) Trees
(c) Dolphin
(d) Star fish
Show Answer

Stones


49. The sun is the main source of energy in a/an _______.
(a) Electric system
(b) Water
(c) Ecosystem
(d) None of these
Show Answer

Ecosystem


50. The plants make food with the help of :
(a) Sunlight
(b) Carbon dioxide
(c) Water
(d) All of these
Show Answer

All of these


51. Plants produce ______ during photosynthesis.
(a) Oxygen
(b) Carbon dioxide
(c) Hydrogen
(d) All of these
Show Answer

Oxygen


52. During respiration animals produce ___________.
(a) Oxygen
(b) Carbon dioxide
(c) Hydrogen
(d) All of these
Show Answer

Carbon dioxide


53. Animals produce_______ which is used by plants to make food.
(a) Oxygen
(b) Carbon dioxide
(c) Hydrogen
(d) All of these
Show Answer

Carbon dioxide


54. The self-sustaining and durable ecosystem is called _________ecosystem.
(a) Chain
(b) Balance
(c) Large
(d) Small
Show Answer

Balance


55. If the number of the aquatic producers increases in a pond beyond the limit, then fish and other living thing will die due to lack of _________.
(a) Oxygen
(b) Carbon dioxide
(c) Hydrogen
(d) All of these
Show Answer

Oxygen


56. The animals which eat plants are called ______
(a) Herbivores
(b) Carnivores
(c) Omnivores
(d) None of these
Show Answer

Herbivores


57. The animals which eat other animals are called _________
(a) Herbivores
(b) Carnivores
(c) Omnivores
(d) None of these
Show Answer

Carnivores


58. The animals which eat both plants and animals are called ______
(a) Herbivores
(b) Carnivores
(c) Omnivores
(d) None of these
Show Answer

Omnivores


59. Producers _______ make food.
(a) Can
(b) Cannot
(c) Finish his food
(d) None of these
Show Answer

Can


60 The series of eating and being eaten in an ecosystem is called __________.
(a) Balance diet
(b) Food chain
(c) Carnivores
(d) Herbivores
Show Answer

Food chain


61. Which of the following shows the correct food chain in an environment?
(a) Sun→Consumers→Producers→Decomposers
(b) Sun→Consumers→Producers→Decomposers
(c)Sun→Producers→Decomposers→Consumers
(d) Sun→Producers→Consumers→Decomposers
Show Answer

Sun→Producers→Consumers→Decomposers


62. In any food chain the first living thing is a ________.
(a) Producers
(b) Consumers
(c) Decomposer
(d) All of these
Show Answer

Producers


63. In any food chain the ________ living thing is herbivores.
(a) First
(b) Second
(c) Third
(d) Fourth
Show Answer

Second


64. In any food chain the third living thing is a ___________.
(a) Herbivores
(b) Carnivores
(c) Omnivores
(d) None of these
Show Answer

Carnivores


65. In the following food chain
Sunlight→Grass→Rabbit→Lion, the relation of loin to rabbit is an example of:

(a) Predation
(b) Parasitism
(c) Mutualism
(d) Production
Show Answer

Predation


66. Every food chain begins at a _______ and ends at an animal.
(a) Producers
(b) Consumers
(c) Decomposer
(d) None of these
Show Answer

Producers

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Chapter No. 2 Test # 4

67. The animals which eat by killing another living thing is called __________.
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Predator


68. When a loin hunts the zebra, the loin is called ________
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Predator


69. When a loin hunts the deer, the deer is called
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Prey


70. The living thing which is killed and eaten by the predator is called a ____.
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Prey


71. The interaction between predator and prey is called _________.
(a) Prestation
(b) Predation
(c) Omnivores
(d) Carnivores
Show Answer

Predation


72. “Deer is killed by lion”, here lion is the predator and deer is _________.
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Prey


73. The grass is ______ for goat.
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Prey


74. The goat is _______ because it eats grass.
(a) Predator
(b) Prey
(c) Omnivores
(d) None of these
Show Answer

Predator


75. Humans have caused _______ damage to the environment.
(a) Reversible
(b) Irreversible
(c) No
(d) None of these
Show Answer

Irreversible


76. World earth day is celebrated around the world on.
(a) 22ndMay
(b) 22ndFebruary
(c) 22ndJuly
(d) 22nd April
Show Answer

22nd April


77. Plantation day is celebrated in _________ as “week of tree plantation”.
(a) February
(b) March
(c) July
(d) August
Show Answer

August


78. What is an ecosystem?
(a) System of non-living things in an environment
(b) Area having a group of living and dead things
(c) System of living things in an environment
(d) The collection of abiotic and biotic components in an area.
Show Answer

The collection of abiotic and biotic components in an area.


79. All the biotic component are:
(a) Animals
(b) Producers
(c) Living things
(d) Non-living things
Show Answer

Living things


80 For the conservation of ecosystem:
(a) Forests are being cut
(b) Roads are being built
(c) Tree plantation is being done
(d) Factories are being installed
Show Answer

Tree plantation is being done


81. Fungus is an example of:
(a) Producer
(b) Consumer
(c) Decomposer
(d) All of these
Show Answer

Decomposer

Test yourself Chapter No. 2 Test # 4

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