Question

Senescent phase of an organism's life span can be recognised by

• A. Slow metabolism
• B. Cessation of reproduction
• C. Decreased immunity
• D. All of the above
  

Answer 1

The correct option is D All of the above

The terminal irreversible stage of ageing is called senesence. This is the last phase of life span, that ultimately leads to death. This phase can be recognised by slow metabolism, cessation of reproduction and decreased immunity.

So, the correct answer is 'All of the above'.