Class 4 Science Chapter 2 Test 3 Updated: 11 Jun 2022 695 Welcome to your Class 4 Science Chapter 2 Test 3 1. In any food chain the first living thing is a ________. Producers Consumers Decomposer All of these None 2. Animals produce_______ which is used by plants to make food. Oxygen Carbon dioxide Hydrogen All of these None 3. ________ are also called rainforests of the ocean. Coral Algae Lotus Bacteria None 4. In any food chain the third living thing is a ___________. Herbivores Carnivores Omnivores None of these None 5. Corals look like stone but actually these are _________. Plants Animals Stone Rock None 6. During respiration animals produce ___________. Oxygen Carbon dioxide Hydrogen All of these None 7. Plants produce ______ during photosynthesis. Oxygen Carbon dioxide Hydrogen All of these None 8. Corals are a part of beautiful ecosystem under ________ Ground Desert Rock Sea None 9. The sun is the main source of energy in a/an _______. Electric system Water Ecosystem None of these None 10. The animals which eat plants are called ______ Herbivores Carnivores Omnivores None of these None 11. If the number of the aquatic producers increases in a pond beyond the limit, then fish and other living thing will die due to lack of _________. Oxygen Carbon dioxide Hydrogen All of these None 12. Corals usually live in form of colony which is called ________. Coral land Coral colony Coral ocean Coral reef None 13. The plants make food with the help of : Sunlight Carbon dioxide Water All of these None 14. In any food chain the ________ living thing is herbivores. First Second Third Fourth None 15. Which of the following shows the correct food chain in an environment? Sun→Consumers→Producers→Decomposers Sun→Producers→Decomposers→Consumers Sun→Producers→Consumers→Decomposers None Time's up
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