Question

odd one out -
1.valves in veins, Aortic semilunar valves, tricuspid valve, bicuspid valve
2. Blood, Lymph, Heart, blood vessels
3.RBC,SAN,WBC,Platelet
4.Lymphatic vessel, Lymph, Blood, Lymph node
5.Palpitation,Congestion,Hypertension,Heart attack

Answer 1

Answer:

1valves in veins

2 Lymph

3 SAN

4 Blood

5 Heart attack