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Which formed elements of blood help in clotting?
APlatelets (thrombocytes)
BRed blood cells (erythrocytes)
CWhite blood cells only
DPlasma proteins only
Answer & Solution
Correct answer: A. Platelets (thrombocytes)
1. The chapter section on platelets describes their role.
2. They release factors that trigger clotting.
3. RBC carry oxygen; WBC fight infection.
4. So platelets are the clotting cells.
_Source: Selina Concise Biology Class 10, Ch 7 The Circulatory System (Mistral OCR'd PDF), section on platelets_
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