Question

Senescent phase of an organism’s life span can be recognized by

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

Answer 1

The correct option is D

All of these

The terminal irreversible stage of ageing is called senescence. This is the last phase of life span, that ultimately leads to death. In both plants and animals, hormones are responsible for the change over from one phase to another. This phase can be recognised by slow metabolism, cessation of reproduction and decreased immunity.