
Concept explainers
Blood tissue is an important carrier in the body. Blood contains white blood cells (WBC), red blood corpuscles (RBC), and platelets. Blood is pumped by heart from one part to another. Blood is involved in carrying oxygen through the hemoglobin pigment present in the RBCs.

Answer to Problem 1TQ
Blood plasma transports waste products, water, and solutes.
Therefore, option (d) is correct.
Explanation of Solution
Justify reasons for the correct statement:
Blood plasma comprises of water (92%), anti-hemophilic factors, vital proteins, and blood components. It also contains some salts, sugars, vitamins, hormones, and fats. Blood plasma contains dissolved ions, gases, and certain important molecules, which altogether play a role in homeostasis.
Option (d) is given as “all of the above”.
Hence, option (d) is correct.
Justify reasons for the incorrect statements:
Option (a) is given as “waste products”.
Blood not only carry waste products like tissue wastes, but it also carries other vital nutrients and immunoglobulins. Hence, it is a wrong answer.
Option (b) is given as “water”.
Blood plasma constitutes 92% water. The rest of the things are comprised of nutrients, RBC, WBC cells, and so on. Hence, it is a wrong answer.
Option (c) is given as “solutes”.
Blood plasma contains 92% water, thus solute content is 8%. Hence, it is a wrong answer.
Hence, options (a), (b), and (c) are incorrect.
Blood plasma is a watery fluid which acts as a carrier to transport nutrients, waste products, ions, and other components in the blood.
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Chapter 21 Solutions
EBK BIOLOGY NOW (CORE EDITION)
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