Question
Medium
Solving time: 3 mins
Assertion (A) In old persons, there is gradually weakening of immune system.
Reason (R) It is because of degeneration of thymus gland.
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Text solutionVerified
Both A and R are true and R is the correct explanation of .
In old persons, there is gradually weakening of immune system because of degeneration of thymus gland.
Thymus secretes a hormone named thymosin which stimulates the development of certain kinds of WBCs involved in generating immunity. It is prominent at the time of birth, but it gradually atrophies in adults and its disappearance causes ageing.
In old persons, there is gradually weakening of immune system because of degeneration of thymus gland.
Thymus secretes a hormone named thymosin which stimulates the development of certain kinds of WBCs involved in generating immunity. It is prominent at the time of birth, but it gradually atrophies in adults and its disappearance causes ageing.
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Question Text | Assertion (A) In old persons, there is gradually weakening of immune system. Reason (R) It is because of degeneration of thymus gland. |
Topic | Chemical Coordination and Integration |
Subject | Biology |
Class | Class 11 |
Answer Type | Text solution:1 |
Upvotes | 55 |