Biology

Distinguish between the following pairs on the basis of words indicated in the brackets ( ):
(a) Erythrocytes and Leukocytes (Nucleus)
(b) Leukocytes and Thrombocytes (Life-span)
(c) Arteries and Veins (Wall and lumen)
(d) Pulmonary and Systemic circulation (Kind of blood)
(e) Mitral valve and Tricuspid valve (Location)

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(a) Difference between Erythrocytes and Leukocytes (Nucleus):

Character	Erythrocytes	Leukocytes
Nucleus	Absent	Present

(b) Difference between Leukocytes and Thrombocytes (Life-span):

Character	Leukocytes	Thrombocytes
Life span	Two weeks	3-5 days

Character	Arteries	Veins
Wall	Thick and muscular	Thin and less muscular
Lumen	Narrow	Wider

(d) Difference between Pulmonary and Systemic circulation (Kind of blood):

Character	Pulmonary circulation	Systemic circulation
Kind of blood	Pulmonary artery brings deoxygenated blood to lungs and pulmonary vein takes oxygenated blood from lungs to heart.	Oxygenated blood is transported to body parts from heart and deoxygenated blood is transported back to heart.

(e) Difference between Mitral valve and Tricuspid valve (Location):

Character	Mitral valve	Tricuspid valve
Location	Present between left atrium and left ventricle.	Present between right atrium and right ventricle.

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