SAQ : Write about the different factors in connection with the senescence and ageing of plants and animals

Question

Write about the different factors in connection with the senescence and ageing of plants and animals. 

Answer

Some of the factors that can affect senescence and ageing in plants and animals include:

1. Genetics – Genetic factors play a role in determining lifespan and ageing in organisms.
2. Environment – External factors such as temperature, light, nutrition, and stress can affect senescence and ageing.
3. Hormones – Hormones such as ethylene, abscisic acid, and cytokinins influence senescence by regulating physiological processes.
4. Oxidative stress – Imbalance between reactive oxygen species and antioxidant defences can accelerate ageing.