Body Fluids and Circulation — Class 11 Biology NCERT Solutions (Free)
Free step-by-step NCERT solutions for Class 11 Biology chapter "Body Fluids and Circulation" — 8 important questions with detailed answers for CBSE board exam preparation.
TL;DR: Free step-by-step NCERT solutions for Class 11 Biology chapter "Body Fluids and Circulation" — 8 important questions with detailed answers for CBSE bo…
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Key Questions Covered:
- What are the main components of blood?
- Describe the structure and function of red blood cells.
- What are the types of white blood cells and their functions?
- + 5 more questions in the full chapter
Solutions Summary:
| Question | Status |
|---|---|
| What are the main components of blood? | ✓ Solved |
| Describe the structure and function of red blood cells. | ✓ Solved |
| What are the types of white blood cells and their functions? | ✓ Solved |
Showing 3 of 8 questions
Q1: What are the main components of blood?
Blood is a connective tissue consisting of two main components:
1. Plasma (~55% by volume): Liquid matrix; 90% water, 10% solutes (proteins, ions, glucose, hormones, wastes)
2. Cells and cell fragments (~45% by volume):
- Red blood cells (RBCs/erythrocytes): ~5 million/mm³; carry oxygen via hemog...
Q2: Describe the structure and function of red blood cells.
RBCs (erythrocytes):
Structure: Biconcave disc shape; ~7-8 micrometer diameter; no nucleus in mature RBCs (mammals).
Composition: ~33% hemoglobin, which gives red color; cytoplasm lacks organelles.
Function: Primary function is oxygen transport. One RBC contains ~280 million hemoglobin molecules, ea...
Q3: What are the types of white blood cells and their functions?
WBCs (leukocytes) are nucleated cells involved in immunity. Main types:
1. Granulocytes (30-40% of WBCs):
- Neutrophils: Most abundant; phagocytose bacteria; form pus
- Eosinophils: Combat parasites; modulate immune response
- Basophils: Release histamine in allergic reactions
2. Monocytes ...
Showing 3 of 8 questions. Visit the full page for complete solutions.