Home > Class 12 Biology > Quizzes > Class 12 Biology Practice Test: Ecosystem - Energy Flow
Class 12 Biology Practice Test: Ecosystem - Energy Flow
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 70% • Most missed: “What are the food levels in an ecosystem called?”
Class 12 Biology Practice Test: Ecosystem - Energy Flow
Time left 00:00
25 Questions

1. Which one of the following is the correct sequence of an aquatic food chain?
2. What percent of energy is transferred in a food chain from one trophic level to another?
3. What are the organisms that cannot manufacture their own food and obtain ready-made organic food from producers called?
4. What is a food chain consisting of autotrophs, heterotrophs, and carnivores called?
5. How is the flow of energy from the sun to producers and then to consumers?
6. What percent of PAR is captured by plants?
7. What is the missing level of the organization?
Tertiary consumer → Secondary consumer → ? → Primary producer
8. During the flow of energy in an ecosystem, in which form is the energy dissipated during various metabolic activities?
9. Which of the following organisms belong to the category of primary consumers?
10. Which are the three types of consumers?
11. What is the food chain beginning with host and ending with a parasite (ecto as well as endoparasite) called?
12. What is the energy stored at the consumer level called?
13. Who are the primary consumers of a biotic community?
14. How sunlight is much is reflected back out of the total sunlight reaching Earth?
15. What amount of sunlight is used for photosynthesis?
16. From which law of energy the ecosystem are not exempted?
17. What is the number of trophic levels equal to?
18. Which is an exception in an ecosystem where the sun is not the source of energy?
19. Which one of the following is the correct sequence of a grassland food chain?
20. What do we study in ecological energetics?
21. What is the trophic level of a lion in a forest ecosystem?
22. The symbol given below each arrow indicates the loss of energy from an ecosystem. In what form is this energy lost?
Heat is the energy lost during flow of energy in an ecosystem
23. What happens when the food energy passes from herbivores to carnivores and to the next organism?
24. To which trophic level do top or ultimate carnivores belong?
25. How many trophic levels do green plants constitute?

⚡ Recently practiced quizzes in this topic
Live quiz activity
Class 12 Biology Practice Test: Evolution - Evidences for Evolution Class 12 Biology Practice Test: Molecular Basis of Inheritance - DNA Fingerprinting Class 12 Biology Practice Test: Molecular Basis of Inheritance - Methodologies of HGP Class 12 Biology Practice Test: Principles of Inheritance and Variation - Mendel's Laws of Inheritance MCQs for Human Reproduction Class 12 Biology Practice Test: Environmental Issues - Radioactive Wastes Class 12 Biology Practice Test: Molecular Basis of Inheritance - The Machinery and the Enzymes for Replication of DNA Class 12 Biology Practice Test: Organisms and Populations - Population Growth Class 12 Biology Practice Test: Biodiversity and Conservation - Importance of Species Diversity to the Ecosystem Class 12 Biology Practice Test: Molecular Basis of Inheritance - Lac Operon
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | OSHA Basics Quiz | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.