Home › Tamil Nadu SSLC (Class 10) › Biology › Structural Organisation of Animals › Which anticoagulant protein, secreted by the sal…
Which anticoagulant protein, secreted by the salivary glands of a leech, prevents the host's blood from clotting?
AThrombin
BHeparin
CHistamine
DHirudin
Answer & Solution
Correct answer: D. Hirudin
1. The salivary glands of the leech surround the pharynx.
2. Their secretion contains a protein that stops blood from clotting.
3. This protein is hirudin.
4. Thrombin actually promotes clotting, the opposite effect, so it is the trap.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 13 Structural Organisation of Animals "Digestive System", p.196_
Related questions
In the female rabbit, the common tube formed by the union of the urinary bladder and the vIn the rabbit, the kidneys remove nitrogenous waste from blood and excrete it mainly in thIn the rabbit brain, the band of nerve tissue connecting the right and left cerebral hemisHow many pairs of cranial nerves are present in the rabbit?In the rabbit heart, the left auriculoventricular aperture is guarded by which valve?The heart of a rabbit is:In the rabbit's respiratory pathway, which structure prevents food from entering the trachWhich type of teeth is completely absent in the rabbit, leaving a gap called the diastema?