Q: In some viral infections, number of platelets are reduced quickly. Platelets are essential because:
(a)they along with red blood cells carry oxygen.
(b)platelets are important to carry food to cells through blood.
(c)platelets remove carbon dioxide from blood.
(d)platelets have a role in blood clotting.
Correct Answer: (d)
The correct answer is (a) 'they along with red blood cells carry oxygen.'. This question from the Environment & Ecology domain tests knowledge of Climate Change & Greenhouse Gases.