Components of Blood

What is the main function of red blood cells?

• To fight infections

• To carry oxygen around the body

• To break down food

• To make blood clot

Which component of blood helps in clotting and stopping bleeding?

• Red blood cells

• Platelets

• White blood cells

• Plasma

What is the role of white blood cells in the blood?

• To carry oxygen

• To help the blood clot

• To fight against infections and diseases

• To provide energy

Which of the following is the largest component by volume in human blood?

• Plasma

• White blood cells

• Platelets

• Red blood cells

Which blood component gives blood its red color?

• Platelets

• Plasma

• Hemoglobin in red blood cells

• White blood cells

Assertion (A): Plasma is important for the transport of substances in the blood.
Reason (R): Plasma contains proteins, hormones, and nutrients that are essential for bodily functions

• Both A and R are correct, and R is not the correct explanation for A.

• Both A and R are correct, and R is the correct explanation for A.
• A is true and R is false.

• A is false and R is true

Assertion (A): The body reacts to a cut or injury by using blood components like White blood cells.

Reason (R): Platelets form clots to prevent excessive bleeding and initiate the healing process.

• Both A and R are correct, and R is the correct explanation for A

• Both A and R are correct, and R is not the correct explanation for A

• A is true and B is false

• A is false and B is true