15 public questions tagged with this topic.
WBCs (leukocytes) are essential for immune defense against infections and foreign pathogens. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Human Health and Disease, Topic: Immunity, diseases and health maintenance.
Leukocytes do not transport oxygen; that function is performed by red blood cells (erythrocytes).
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Drugs and Alcohol Abuse - Opioids Cannabinoids Cocaine Adolescence
Thymosin, secreted by the thymus, promotes the development and differentiation of T-lymphocytes.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Cancer - Causes Types Treatment Metastasis
Phagocytes, such as macrophages and neutrophils, play a key role in engulfing and digesting pathogens.
Ref: NCERT Class 12 Biology Chapter 7: Human Health and Disease Common Diseases - Helminthic and Fungal - Ascariasis Filariasis Ringworm
Neutrophils are the primary phagocytic cells that engulf pathogens as part of the immune response.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Neutrophils are the most abundant WBCs, constituting about 60-65% of total WBC count.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Most WBCs have a shorter lifespan than RBCs, except for some memory lymphocytes that persist for years.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Basophils are granulocytes, along with neutrophils and eosinophils, and play a role in inflammatory responses.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Basophils release histamine, which plays a role in allergic responses and inflammation.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
Basophils release histamine and other chemicals that cause allergic reactions.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Lymph and Circulatory Pathways
WBCs are involved in immune response, while platelets are responsible for blood clotting.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Blood - Plasma and Formed Elements
Neutrophils and monocytes are phagocytic WBCs that engulf and digest foreign particles and pathogens.
Ref: NCERT Class 11 Biology Chapter 15: Body Fluids and Circulation Blood - Plasma and Formed Elements
