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About 55% of human blood is made up of a slightly alkaline, non-cellular fluid that carries proteins, glucose, urea, hormones and minerals. This fluid is called what?
ALymph
BPlasma
CSerum
DHaemoglobin
Answer & Solution
Correct answer: B. Plasma
1. Blood has fluid plasma plus formed elements.
2. The fluid portion is about 55% and is slightly alkaline.
3. Lymph is the fluid of the lymphatic system, not blood's main fluid, so option A is wrong.
4. The 55% non-cellular fluid of blood is plasma, option B.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 14 Transportation in Plants and Circulation in Animals "Blood", p.211_
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