Class 4 Science Chapter 2 Test 3 Updated: 11 Jun 2022 625 Welcome to your Class 4 Science Chapter 2 Test 3 1. Animals produce_______ which is used by plants to make food. Oxygen Carbon dioxide Hydrogen All of these None 2. In any food chain the third living thing is a ___________. Herbivores Carnivores Omnivores None of these None 3. Corals usually live in form of colony which is called ________. Coral land Coral colony Coral ocean Coral reef None 4. The plants make food with the help of : Sunlight Carbon dioxide Water All of these None 5. In any food chain the first living thing is a ________. Producers Consumers Decomposer All of these None 6. ________ are also called rainforests of the ocean. Coral Algae Lotus Bacteria None 7. In the following food chain Sunlight→Grass→Rabbit→Lion, the relation of loin to rabbit is an example of: Predation Parasitism Mutualism Production None 8. 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 9. Corals look like stone but actually these are _________. Plants Animals Stone Rock None 10. Corals are a part of beautiful ecosystem under ________ Ground Desert Rock Sea None 11. The sun is the main source of energy in a/an _______. Electric system Water Ecosystem None of these None 12. None 13. The animals which eat both plants and animals are called ______ Herbivores Carnivores Omnivores None of these None 14. Plants produce ______ during photosynthesis. Oxygen Carbon dioxide Hydrogen All of these 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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