Structural Organisation In Animals Question 199
Question: Assertion : Chilling of blood decreases coagulation time. Reason : Cold depresses the action of coagulation promoting enzymes.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If the assertion is false but reason is true
Show Answer
Answer:
Correct Answer: D
Solution:
Treating the blood to low temperatures (chilling) decreases the activity of coagulation promoting enzymes.
So, at low temperatures it will take more time for the blood to clot i.e.
the coagulation of blood gets delayed.
Thus chilling of blood increases the coagulation time (time taken for the blood to coagulate) and not decrease it.
BETA
