You will find Class 10 Science Chapter 15 Extra Questions. In Class 10 Science Chapter 15 Extra Questions, you will find extra questions for better practice that will help you in your board exams. When you solve these extra questions, you can also go through extra questions of chapter 14 and NCERT Class 10 Science Chapter 15 solutions
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| Class 10 Science Chapter 15 Extra Questions |
Class 10 Science Chapter 15 Extra Questions
Class 10 Science Chapter 15 Extra Questions consist of topics- biodegradable and non-biodegradable substance, ecosystem- its components, functions, food chain and food web, trophic level, ecological pyramid, biological magnification, the flow of energy in the food chain and ecosystem, depletion of the Ozone layer, the importance of Ozone layer, Chlorofluorocarbon-its uses and disadvantages, garbage management.
Class 10 Science Chapter 15 Extra Questions
If you find any difficulty in finding answers to Class 10 Science Chapter 15 Extra Questions then go through NCERT solutions of class 10 science or you can comment in the comment section, we will be very pleased to help you.
CHAPTER – 15-OUR ENVIRONMENT
1. What do you mean by biodegradable and non-biodegradable substances?
2. Explain the flow of energy in an ecosystem.[Annual
exam-2013]
3. What are producers?
4. What do you mean by trophic level? Draw the
diagram showing the trophic level.
5. What is the role of decomposers in an
ecosystem?
6. How much solar energy is captured by green
plants?
7. How much energy is transferred from a trophic
level to another?
8. What is biological magnification?
9. Make a list of abiotic components of an ecosystem.
10. How ozone is formed?
11. How depletion of the ozone layer takes place?
12. What are the harmful effects of the depletion of the ozone layer?
13. What is the full form of CFC?
14. How can you help in reducing the problem of
waste disposal? Give any two methods.
15. Give any two methods which can help in
reducing the problem of waste disposal.[Annual exam-2012]
16. What is the use of CFC?
17. Give any two ways in which biodegradable
substances would affect the environment.
18. Give any two ways in which non-biodegradable
substances would affect the environment.
19. What is an ecosystem?
20. What are the main components of an ecosystem?
Explain.
21. What is a food chain?
22. What is the food web?
23. Which one of the following are biodegradable
substances- paper, wheat, glass, wood, iron article
24. Draw a diagram of the food chain.
25. Give examples of man-made ecosystems.
26. Name one biodegradable waste that is used to
produce energy.
27. Which one of the following is not terrestrial ecosystem-
forest, aquarium, grassland, and desert?
28. Differentiate between producers and consumers.
29. Construct an aquatic food chain showing four
trophic levels.
30. What are the various steps of the food chain
called?
31. Write the type o organisms present in the
second trophic level.
32. What percentage of solar energy is trapped
and utilized by plants?
33. What is meant by Omnivores?
34. Make a pyramid of numbers and show different trophic
levels of it.
35. How is the increase in demand for energy
affecting our environment adversely?
36. Name any two decomposers.
37. Consider the food chain
Grass →sheep→tiger
If the tiger has 40J of
energy available in this food chain, how much energy was available in the grass.
38. If a harmful chemical enters a food chain
comprising lizards, hawks, mice, and plants, which one of these organisms is
likely to have the maximum concentration of the harmful chemical in its body?
39. Name the process in which a harmful substance
enters a food chain and gets concentrated in different trophic levels.
40. What roles of ozone in our environment?
41. How chemical DDT does enter our body?
42. Which compound is responsible for the
depletion of the Ozone layer?
43. Is Ozone is helpful in respiration?
44. Describe any one method by which biodegradable
waste can be turned into useful substances.
45. Name the process in which a harmful chemical
enters a food chain and gets accumulated more and more at each successive
trophic level of organisms.
46. Is it correct that the use of paper cups does not affect the environment?
47. We don’t go into the forest to clean dead remains
of animals and plants but the area is automatically cleaned. How would you explain
it?
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