1.	Which of these is not a feature of veins?
	They are thin-walled.   They return blood from the various parts of the body to the heart.   They contain valves.   All veins carry deoxygenated blood.
Hint Dica
2.	Very fine vessels called capillaries connect arteries and veins to each other.
	True   False
3.	Which of the following is true?
	Platelets contain single nucleus.   Platelets do not contain nucleus.   Platelets contain many nuclei.   Platelets contain an ill-defined nucleus.
Dica
4.	Which of these is not true regarding hemoglobin?
	Percentage of hemoglobin in a healthy young man is 10 – 12 gm%.   It carries oxygen.   It is found in RBCs.   Its deficiency leads to anemia.
5.	Identify the blood vessel ‘A’ in this diagram.
	Pulmonary artery   Inferior vena cava   Carotid artery   Aorta