Blood Blood Clotting

A drop of each of the following is placed separately on four slides. Which of them will not coagulate?

1.	blood plasma
2.	blood serum
3.	Sample from the thoracic duct of the lymphatic system
4.	Whole blood from the pulmonary vein

Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body:

1.	Erythrocytes	2.	Leucocytes
3.	Neutrophils	4.	Thrombocytes

Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?

1. Epinephrine

2. Thrombokinase

3. Thrombin

4. Renin

Given below are two statements:

Statement I:	The coagulum is formed of network of threads called thrombins.
Statement II:	Spleen is the graveyard of erythrocytes.

In the light of the above statements, choose the most appropriate answer from the options given below:

1.	Statement I is incorrect but Statement II is correct.
2.	Both Statement I and Statement II are correct.
3.	Both Statement I and Statement II are incorrect.
4.	Statement I is correct but Statement II is incorrect.