Question

Oxygen is mainly transported by

• A. blood plasma
• B. RBCs
• C. Blood platelets
• D. WBCs

Answer 1

The correct option is B

RBCs

The correct answer is option (B)
Explanation of the correct option:

1. Oxygen is transported to the different tissues in the body with the help of a protein known as hemoglobin that is present in the RBCs in the blood.
2. Oxygen binds to hemoglobin and forms oxyhemoglobin which transports it from the lungs to the tissues.
3. Around 98% of oxygen is transported to cells by hemoglobin.

Explanation of the incorrect options:
Option (A):

1. Blood plasma is the part of the blood which does not contain any blood cells.
2. About 2% of the total oxygen transported in the body occurs through oxygen dissolved in plasma.

Option (C):

1. Blood platelets are defined as the colorless cells that are found in the blood.
2. They are involved in clot formation which is essential for stopping bleeding.

Option (D):

1. White blood cells (WBC) are involved in providing immunity to the body against pathogens like viruses, bacteria, etc.

Final answer: Oxygen is mainly transported by RBCs