Class 4 Science Chapter 2 Test 3 Welcome to your Class 4 Science Chapter 2 Test 3 1. In any food chain the third living thing is a ___________. Herbivores Carnivores Omnivores None of these 2. ________ are also called rainforests of the ocean. Coral Algae Lotus Bacteria 3. Animals produce_______ which is used by plants to make food. Oxygen Carbon dioxide Hydrogen All of these 4. The series of eating and being eaten in an ecosystem is called __________. Balance diet Food chain Carnivores Herbivores 5. In any food chain the ________ living thing is herbivores. First Second Third Fourth 6. Corals usually live in form of colony which is called ________. Coral land Coral colony Coral ocean Coral reef 7. The animals which eat both plants and animals are called ______ Herbivores Carnivores Omnivores None of these 8. The animals which eat plants are called ______ Herbivores Carnivores Omnivores None of these 9. Which of the following shows the correct food chain in an environment? Sun→Consumers→Producers→Decomposers Sun→Producers→Decomposers→Consumers Sun→Producers→Consumers→Decomposers 10. In the following food chain Sunlight→Grass→Rabbit→Lion, the relation of loin to rabbit is an example of: Predation Parasitism Mutualism Production 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 12. The animals which eat other animals are called _________ Herbivores Carnivores Omnivores None of these 13. Corals look like stone but actually these are _________. Plants Animals Stone Rock 14. The sun is the main source of energy in a/an _______. Electric system Water Ecosystem None of these 15. During respiration animals produce ___________. Oxygen Carbon dioxide Hydrogen All of these Time is Up! Time's up
