Q11. Which cell lacks nucleus?
Correct: RBC
RBCs do not have a nucleus.
Q12. Which blood group is universal donor?
Correct: O
O negative is universal donor.
Q13. Which organ helps in breathing?
Correct: Lungs
Lungs are used for breathing.
Q14. What is the main function of roots?
Correct: Absorb water
Roots absorb water and minerals.
Q15. Which vitamin helps in blood clotting?
Correct: Vitamin K
Vitamin K helps in clotting.
Q16. What is the smallest bone in the body?
Correct: Stapes
Stapes is the smallest bone.
Q17. Which part controls the body?
Correct: Brain
Brain controls the body.
Q18. What is the study of plants called?
Correct: Botany
Botany is study of plants.
Q19. What is the study of animals called?
Correct: Zoology
Zoology is study of animals.
Q20. Which organ stores bile?
Correct: Gall bladder
Gall bladder stores bile.
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