Blood platelets are found only in the blood of |
|||||||
a) |
Birds |
b) |
Reptiles |
c) |
Mammals |
d) |
Amphibians |
Blood platelets are found only in the blood of |
|||||||
a) |
Birds |
b) |
Reptiles |
c) |
Mammals |
d) |
Amphibians |
(c)
Platelets are irregularly shaped membrane bound cell fragments. These are found only in the blood of mammals, they usually lack nuclei and are formed from special bone marrow. They are responsible for blood clotting. They survive for 5 to 9 days before being destroyed by the spleen and liver.