NCERT Solutions for Class 7 Science Chapter 11
Important NCERT Questions
7th Chapter 11 Transportation in Animals and Plants
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 8
What are the components of blood?
Share
Blood is a liquid, which has cells of various kinds suspended in it. Main components of blood are:
• Plasma: The fluid part of the blood is called plasma.
• RBC: One type of cells are the red blood cells (RBC) which contain a red pigment called haemoglobin.
• WBC: The blood also has white blood cells (WBC) which fight against germs that may enter our body.
• Platelets: The clotting of blood is caused by another type of cells in the blood, called platelets.
https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-11/
Various components of blood are:
(a) Red blood cells
(b) White blood cells
(c) Blood platelets
(d) Blood plasma Ÿ Blood serum
Blood comprises red blood cells carrying oxygen, white blood cells fighting infections, and platelets aiding in clotting to stop bleeding. Its liquid part, plasma, transports nutrients, waste, and hormones throughout the body. Red blood cells deliver oxygen to tissues, white blood cells defend against germs, platelets prevent excessive bleeding, and plasma carries essential substances, ensuring the body functions properly by supporting immunity, oxygenation, and healing.