Class 8 Online Courses

Chapter 9: Class 8 Science Exam Tests

Class 8 Science MCQs - Chapter 9

Respiration and Circulation Quiz Questions and Answers PDF - 3

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Respiration and Circulation Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: The larger blood vessels which carry blood back to heart are

A) arteries
B) veins
C) valves
D) capillaries

MCQ 12: Insects breath through small holes in their body called

A) lungs
B) air sacs
C) stomata
D) spiracles

MCQ 13: The external part of nose through which air enters is called

A) trachea
B) alveoli
C) nostril
D) bronchi

MCQ 14: The air which we breathe in is called

A) inhaled air
B) exhaled air
C) circulated air
D) deoxygenated air

MCQ 15: The blood is mixture of

A) red and blood cells
B) plasma
C) platelets
D) all of them

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