MCQ Practice – Class 6 to 10

Q1. In humans, excretory product is?

A. Urea B. Ammonia C. Salt D. Uric acid

Q2. Blood plasma is mainly composed of?

A. Glucose B. Proteins C. Salts D. Water

Q3. The longest part of the alimentary canal is?

A. Oesophagus B. Stomach C. Small intestine D. Large intestine

Q4. What is the ultimate source of energy for all living beings?

A. Sun B. Water C. Wind D. Earth

Q5. Which blood cells fight diseases?

A. RBC B. Platelets C. All of these D. WBC

Q6. Which component helps in blood clotting?

A. Platelets B. RBC C. Plasma D. WBC

Q7. Which blood vessel carries oxygenated blood?

A. Artery B. Capillary C. Vein D. Lymph vessel

Q8. Human lungs contain millions of?

A. Cilia B. Alveoli C. Nephrons D. Villi

Q9. Which organ purifies blood in humans?

A. Kidney B. Liver C. Lungs D. Heart

Q10. Translocation of food in plants occurs through?

A. Xylem B. Phloem C. Root hairs D. Lenticels

Quiz – Life Processes