Class 4 Science Chapter 1 Test 3 Updated: 11 Jun 2022 216 Welcome to your Class 4 Science Chapter 1 Test 3 1. Premolar and molar teeth are used for: Biting and cutting Piercing and tearing Chewing and grinding None of these 2. Bone marrow helps to produce ______ Blood Water Carbon dioxide None of these 3. Lungs are surrounded by _______ Ribs Skull Brain None of these 4. Tiger has large ____________ Incisors Canines Premolar Molar 5. Tiger uses its ________ for piercing the prey. Incisors Canines Premolar Molar 6. When we exhale air, the lungs Contract Expand Both a & b None of these 7. When we inhale air, the lungs _______ Contract Expand Both a & b None of these 8. The exchange of oxygen between blood and air takes place in the _______. Lungs Brain Stomach All of these 9. __________ are used for piercing and tearing food. Incisors Canines Premolar Molar 10. The bones of our arm and legs are __________. Hollow Open Closed None of these 11. During breathing air enters in our lungs through______ Nose Wind pipe Stomach Both a & b 12. Rat uses its _________ for biting food or killing prey. Incisors Canines Premolar Molar 13. The function of bones of leg is to help in _____ Locomotion Walking Both a & b None of these 14. During breathing air enters in our _______ Lungs Brain Stomach All of these 15. The function of skull is to protect __________ Lungs Brain Stomach All of these Please fill in the comment box below. Time is Up! Time's up
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