I have heard that a parrot can live up to 140 years and a average lifespan of human(they live a protected life in a groups) can’t live that longer what’s the reason. what does the lifespan of the organism really matters upon. Not only parrot but Banyan tree (upto 200-300 years) and they don’t even …

Population biologist speak of r-adapted and K-adapted species. Of course many, perhaps most, species are somewhere in between these two strategies. Basically, r-adaptation means produce hordes of offspring which mature very quickly; it tends to be found in species subject to high predation pressure.…

Now by reading all your replies ,Is it safe to conclude that their are several factors which affect life span slow metabolism predators (environment) body mass(size) But all of the factors are not inter- related and all have contradiction. and humans have longer life as compared to other animals…

Can you tell me whether I have answered last point correctly

I think @dlevitis summed it up pretty well - there are just too many factors to come up with a short answer. Genetics, metabolic by-products, gene repair ability all play a part too. Here’s a Wikipedia article about some of the genetics of aging - Genetics of aging - Wikipedia . If you can understand…

In fact not really, K and r strategies are only applied when you compare different groups, then there’re many groups, like turtles, that don’t look after offspring after laying eggs, but live a long life, those strategies depend on how many youngs die, adults can have both long and short lifespawn, …

[image] mamestraconfigurata: Again, take a deep breath before attempting to understand it! I feel like this statement summarizes the entire field of Biology. :joy: I know this to be true since I study Biology.

So according to this, if we humans keep ourselves from dying from anything but old age, then we will eventually evolve to live longer?

Probably not. Evolution works based on how well you pass on your genes (how many offspring you have). Many organisms can continue to produce offspring into old age, which means that living longer could be really beneficial in a relatively safe environment. It’s different for humans because of menop…

What makes some organism have greater life span than other?

Nature Talk

mamestraconfigurata May 12, 2021, 2:33pm 15

Oh, there is also pre-programmed cell death/apoptosis which is also a factor. Apoptosis - Wikipedia. Again, take a deep breath before attempting to understand it!

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What makes some organism have greater life span than other?

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