The blood leaving the tissues becomes richer in

(A) carbon dioxide

(B) water

(C) hemoglobin

(D) oxygen



When the cells undergo respiration , they take in oxygen from the blood and release carbon dioxide.

  • This CO 2 is carried in the blood by the capillaries and veins back to the heart for re-oxygenation
  • Thus, the blood that leaves the tissues is rich in carbon dioxide .

Schematic plan of blood circulation in humans-01.jpg

So, the correct answer is (a) carbon dioxide

  1. Class 10
  2. Chapter 6 Class 10 - Life Processes (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo