Question

Thymus and brain are the main factors in the ageing
A) Stress theory
B) Gene theory
C) Pacemaker theory
D) Mutation theory

Answer 1

Correct Answer: C

Solution :

Immunological (Thymus) & neuroendocrine (Brain) control theories of ageing are collectively called a pace-maker theory of ageing

Answer 2

hiii,

The answer is option C

hope helps