Life Span | Definition & Meaning

Life Span

The period from birth to the natural death of an organism represents its life span. Life span is a specific trait of each organism. Life span varies from few days to several thousand years. Life spans are not necessarily correlated with size or complexity of organisms. As for example, crow and parrot are of almost equal size, but crow has a life span of only 15 years while parrot lives for about 140 years. Similarly mango tree lives for 200 years while peepal has a life span of about 2500 years. Figure given below gives appropriate life spans of some organisms.

Whatever be the life span, the death of every organism is sure, which means no individual is living forever So we can say living organisms are mortal. Now a question arises, /s this true for single-celled organisms Also? No, single-celled organisms when they grow up they undergo division i.e., a mother cell divides into Two daughter cells. No body part is left to die. So they simply get larger and then divide which is not Considered as death. Such organisms are immortal.

Life Span of Some Organisms– Examples

Organisms Life span (maximum)
May fly 24 hours
Butterfly 1-2 weeks
Fruit fly 30 days
Rice plant 4 months
Rat 4 years
Rabbit 13 years
Crow 15 years
Dog 25 years
Monkey 26 years
Cat 35-40 years
Horse 50 years
Elephant 60-75 years
Humans 100 years
Tortoise 100-150 years
Peepal 2000-3000 years
Life Span | Definition & Meaning
Life Span of Some Organisms– Examples

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