eVidyarthi

Energy Flow and Ecological Pyramids

1. There will be total 20  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

 

1. In an aquatic ecosystem, the trophic level equivalent to cows in a grassland is
 
 
 
 

Question 1 of 20

2. The statement ‘Tiger is the apex of the food chain’ indicates:
 
 
 
 

Question 2 of 20

3. Ecosystem creates
 
 
 
 

Question 3 of 20

4. Most food chains are composed of how many trophic levels?
 
 
 
 

Question 4 of 20

5. An inverted pyramid of numbers and an inverted pyramid of biomass are respectively seen in
 
 
 
 

Question 5 of 20

6. The loss of energy as one proceeds from one trophic level to the next trophic level is approximately
 
 
 
 

Question 6 of 20

7. Which of the following pyramid of numbers is not upright?
 
 
 
 

Question 7 of 20

8. In a pyramid of numbers, in a grassland ecosystem, the largest population is that of
 
 
 
 

Question 8 of 20

9. The pyramid of energy in an aquatic ecosystem is
 
 
 
 

Question 9 of 20

10. When the number of organisms at successive levels is plotted, they assume the shape of a pyramid. This is called the pyramid of
 
 
 
 

Question 10 of 20

11. Approximately what amount of energy is available to one trophic level from one trophic level lower to it?
 
 
 
 

Question 11 of 20

12. Which types of the following pyramids are never inverted?
 
 
 
 

Question 12 of 20

13. Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?
 
 
 
 

Question 13 of 20

14. In a food chain, the total amount of living material is depicted by
 
 
 
 

Question 14 of 20

15. This is an inverted pyramid:
 
 
 
 

Question 15 of 20

16. Changes in the body form of some planktonic animals with seasonal changes in temperature are called:
 
 
 
 

Question 16 of 20

17. An inverted pyramid is found in
 
 
 
 

Question 17 of 20

18. The ‘10 Percent Law’ is related to
 
 
 
 

Question 18 of 20

19. During the food chain, the maximum energy is stored in
 
 
 
 

Question 19 of 20

20. The sequence of species through which the organic molecules in a community process is
 
 
 
 

Question 20 of 20