Our Environment Quiz - ICSE Class 6 Biology

Free practice quiz: Our Environment (ICSE Class 6 Biology). 47 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 6 Biology practice quiz has 47 multiple-choice questions on Our Environment, and 47 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is an abiotic component of our environment?

   1. Trees
   2. Animals
   3. Sunlight
   4. Fungi
   Show answer

   Answer: C. Sunlight

   Abiotic components are non-living physical and chemical elements in the environment that affect living organisms and the functioning of ecosystems. Sunlight is a non-living factor.

2. The process of water evaporating from the leaves of plants is known as:

   1. Evaporation
   2. Condensation
   3. Transpiration
   4. Precipitation
   Show answer

   Answer: C. Transpiration

   Transpiration is the process where moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.

3. The water cycle is also known as the:

   1. Carbon cycle
   2. Nitrogen cycle
   3. Hydrologic cycle
   4. Oxygen cycle
   Show answer

   Answer: C. Hydrologic cycle

   The hydrologic cycle describes the continuous movement of water on, above, and below the surface of the Earth, encompassing processes like evaporation, transpiration, condensation, and precipitation.

4. Which of the following is an example of pollution affecting our environment negatively?

   1. Rainforests
   2. Oceans
   3. Plastic waste
   4. Healthy soil
   Show answer

   Answer: C. Plastic waste

   Plastic waste is a form of pollution that harms ecosystems, wildlife, and can persist in the environment for hundreds of years.

5. Which of the following gases is primarily responsible for the greenhouse effect?

   1. Oxygen
   2. Nitrogen
   3. Carbon dioxide
   4. Hydrogen
   Show answer

   Answer: C. Carbon dioxide

   Carbon dioxide (CO2) is a major greenhouse gas that traps heat in the Earth's atmosphere. While other gases also contribute, CO2 plays a significant role in the warming of the planet.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The interconnectedness of producers, consumers, and decomposers in an environment forms a:
2. Which gas is primarily released by plants during photosynthesis, essential for most living organisms?
3. A decomposer's primary role in an ecosystem is to:
4. Which of the following best describes a habitat?
5. In a food chain, what is the role of a herbivore?
6. Which of the following is a renewable resource?
7. Pollution that originates from a single, identifiable source, like a factory smokestack, is called:
8. Acid rain is primarily caused by emissions of:
9. Which of the following is an example of a producer in a terrestrial ecosystem?
10. What is the primary function of the ozone layer?
11. Which of the following is a non-renewable resource?
12. What is eutrophication?
13. A group of the same species living in the same area is called a:
14. Which human activity contributes most significantly to deforestation?
15. What is the natural process that returns nutrients from dead organisms to the soil?
16. Which of the following is an example of a secondary consumer?
17. What is the primary effect of greenhouse gases on Earth's climate?
18. Which organism typically occupies the highest trophic level in a grassland food chain?
19. Conservation efforts primarily aim to:
20. What is the term for a community of living organisms interacting with their physical environment?
21. A symbiotic relationship where both organisms benefit is called:
22. The process by which water vapor in the atmosphere cools and changes back into liquid water, forming clouds, is called:
23. Which factor is crucial for the growth and survival of producers in an ecosystem?
24. What is an example of a renewable energy source?
25. The thinning of the ozone layer is primarily caused by:
26. What is the term for organisms that feed on dead or decaying organic matter?
27. The continuous movement of energy and nutrients through an ecosystem is known as:
28. Which of the following is a biotic component of a forest ecosystem?
29. The process of water returning to the Earth from the atmosphere in the form of rain, snow, sleet, or hail is called:
30. What is a 'food web'?
31. An organism that consumes other organisms for energy is called a:
32. Which of the following is an example of a non-point source of water pollution?
33. What is the term for the variety of life in a particular habitat or ecosystem?
34. The loss of forest cover due to human activities is known as:
35. In a food chain, an organism that eats only plants is a:
36. What role do bacteria and fungi play in the environment?
37. Which of the following is an example of a renewable resource that can be used to generate electricity?
38. The total collection of living organisms and their abiotic environment in a particular area is called a:
39. What is the primary function of roots in plants?
40. Which of the following gases is a major component of the Earth's atmosphere, essential for respiration?
41. The gradual change in the species composition of an ecosystem over time is called:
42. What is the most significant impact of deforestation on the environment?

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