guys please send me notes of ch 11 transportation in animals and plants of 7th class
answer correctly I will mark brainlist
and plz. do not post unnecessary answer
Answers
Explanation:
Transportation in animals
Transportation in animal takes place through circulatory system which includes blood, blood vessels and heart.
Blood is the red fluid which flows throughout the body and carries oxygen to all the cells of the body from the lungs and car bon dioxide from all the cells to the lungs.
Blood contains white blood cells, red blood cells, platelets and plasma.
Tube like structure through which carry blood to cells, tissues and organs are called as blood vessels.
Two special blood vessels are arteries and veins.
After reaching the organs, the arteries divide in to small branches called as capillaries.
Heart in another component of circulatory system which is also known as pumping organ.
Heart consists of four chambers separated by a partition to avoid mixing of oxygenated and deoxygenated blood.