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MCQ Science and Technology Chapter 7 Class 9 Maharashtra Board

Energy Flow in an Ecosystem

1. What is the term for the sequence of interactions between producers, consumers, and saprophytes in an ecosystem?

Question 1 of 20

2. Which organisms are directly dependent on autotrophs in a food chain?

Question 2 of 20

3. Which of the following is an example of a secondary consumer?

Question 3 of 20

4. What is formed by the interconnection of many food chains in an ecosystem?

Question 4 of 20

5. Which type of consumer feeds on both herbivores and carnivores?

Question 5 of 20

6. What is the term for the intricate network formed when an organism is prey for multiple consumers?

Question 6 of 20

7. Which organisms decompose the bodies of dead animals in an ecosystem?

Question 7 of 20

8. What is the step at which an organism obtains its food in a food chain called?

Question 8 of 20

9. Who first proposed the concept of the Ecological Pyramid in 1927?

Question 9 of 20

10. What happens to the amount of energy as it moves from producers to apex consumers?

Question 10 of 20

11. What is the pattern of energy exchange in an ecosystem called?

Question 11 of 20

12. What is the primary source of energy in any ecosystem?

Question 12 of 20

13. What happens to the energy of apex consumers after their death?

Question 13 of 20

14. Why is the passage of energy in an ecosystem called ‘one way’ transport?

Question 14 of 20

15. What do decomposers convert the remains of organisms into?

Question 15 of 20

16. Which institute in Delhi is involved in research and training on ecology?

Question 16 of 20

17. What is the cyclical flow of nutrients within an ecosystem called?

Question 17 of 20

18. Through which medium does the bio-geo-chemical cycle operate?

Question 18 of 20

19. Which cycle is speedier compared to the sedimentation cycle?

Question 19 of 20

20. What is the main process by which plants convert carbon dioxide into carbohydrates?

Question 20 of 20


 

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