Class 4 Science Chapter 1 Test 3 Updated: 11 Jun 2022 704 Welcome to your Class 4 Science Chapter 1 Test 3 1. The bones of our arm and legs are __________. Hollow Open Closed None of these 2. Premolar and molar teeth are used for: Biting and cutting Piercing and tearing Chewing and grinding None of these 3. All the bones are united with one another at the joints forming a frame called ________. Brain Skull Skeleton Lungs 4. Lungs are surrounded by _______ Ribs Skull Brain None of these 5. ________ protect and support body parts. Brain Skull Skeleton Lungs 6. __________ are used for piercing and tearing food. Incisors Canines Premolar Molar 7. The function of skull is to protect __________ Lungs Brain Stomach All of these 8. During breathing air enters in our _______ Lungs Brain Stomach All of these 9. _________ are used for biting and cutting food. Incisors Canines Premolar Molar 10. The exchange of oxygen between blood and air takes place in the _______. Lungs Brain Stomach All of these 11. When we exhale air, the lungs Contract Expand Both a & b None of these 12. Tiger uses its ________ for piercing the prey. Incisors Canines Premolar Molar 13. Rat uses its _________ for biting food or killing prey. Incisors Canines Premolar Molar 14. There are __________ bones in the human skeleton. 106 206 306 None of these 15. During breathing air enters in our lungs through______ Nose Wind pipe Stomach Both a & b Please fill in the comment box below. Time's up
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