Welcome to your Our Environment MCQs Mock Test of 10th Class Science
1.
1. If a grasshopper is eaten by frog, then the energy transfer will be from :
2.
2. Disposable plastics plates should not be used because ————–.
3.
3. The organisms of higher trophic level which feed on several types of organisms belonging to lower trophic level, constitute the—————–.
4.
4. Which of the following groups contain only biodegradable items ?
5.
5. Which is non biodegradable?
6.
6. In a given food chain the amount of energy at fourth trophic level is 5 KJ, what will be the energy at producer level ?
7.
7. The excessive exposure of humans to UV rays results in :
8.
8. What will happen if deer is missing from the food chain : grass → deer → Tiger ?
9.
9. Which is incorrect:
10.
10. The % of solar radiation absorbed by all green plants for photosynthesis is about ———–.
11.
11. The decomposers in ecosystem:
12.
12. The flow of energy in ecosystem :
13.
13. In an ecosystem, the 10% of energy available for transfer from one trophic level to next is in the form of ____.
14.
14. Which of the following limits the number of trophic levels in a food chain?
15.
15. Which of the following constitute the food chain?
16.
16. Which of the following are environment friendly practices?
17.
17. In a food chain, the third trophic level is always occupied by_____.
18.
18. An ecosystem includes _____.
19.
19. Accumulation of non-biodegradable pesticides in the food chain, in increasing amount at each higher trophic level is known as ______
20.
20. Which of the following is not an example of abiotic factors?
21.
21.—– is a biodegradable pollutant .
22.
22. Which of the following is the terrestrial ecosystem?
23.
23. —- is an omnivore animal .
24.
24. The formula of ozone is _____.
25.
25. The number of atoms of oxygen in ozone______.
26.
26. In the food chain, herbivores fall at ____ level .
27.
27. In food chain, small carnivores fall at __ level.
28.
28. In trophic level, the greatest number is of _____.
29.
29. In food web, flow of energy is :
30.
30. Following is true for food web :
31.
31. Order of energy flow in ecosystem is :
32.
32. Ozone shields the surface of earth from :
33.
33. Which refrigerant is responsible for depletion of ozone layer
34.
34. The constituent that does not form ecosystem is :
35.
35. The functional unit of environment
37.
37. Which is not an abiotic factor ?
38.
38. _____ is a terrestrial ecosystem .
39.
39. The microorganisms comprises of :
40.
40. The organisms which synthesise carbohydrates from inorganic compounds using radiant energy are called :
41.
41. What percentage of sunlight is captured by plants to convert into food energy ?
42.
42. A detritus food chain begins with _____.
43.
43. Which statement is incorrect :
